Malicious PDF — malware analysis report

Static analysis result for SHA-256 8179662cf2c5ff9d…

MALICIOUS

PDF

78.4 KB Created: 2020-07-20 11:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebbdbeb411933df188a2663bbfdf6520 SHA-1: 82bbc2d32385c5a4a6718ae35d33a297e9e0a546 SHA-256: 8179662cf2c5ff9d7e35185d52e4707c940adc89e732c20100fb596da79b0012
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating these links point to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to "scheming pdf" and the authoring application indicates it was generated by wkhtmltopdf, often used for creating PDFs from web content. The high number of external PDF links suggests a link farm or SEO manipulation tactic, potentially leading to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=definition+of+scheming+pdf In PDF document text
    • http://files.activesportssolutions.com/uploads/1/3/1/1/131164476/0b7cf9899.pdfIn PDF document text
    • http://files.hannesmarais.com/uploads/1/3/0/7/130738915/8feb47bad20a624.pdfIn PDF document text
    • http://files.aliveleadership.com/uploads/1/3/0/7/130775014/navajifog-wewizenolifi.pdfIn PDF document text
    • http://files.wildthingyogaboutique.com/uploads/1/3/1/4/131406036/ef2677d7e52b41a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/55074753246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/77224524906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/velad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/28165292914.pdfIn PDF document text
    • https://purupona.files.wordpress.com/2020/06/bigibenusifozusupeloj.pdfIn PDF document text
    • https://dufamisiril.files.wordpress.com/2020/06/gapojezakuxigiwirobem.pdfIn PDF document text
    • https://vabadepofi.files.wordpress.com/2020/06/57199754304.pdfIn PDF document text
    • https://loxamog.files.wordpress.com/2020/06/deluvuwusifejodekesem.pdfIn PDF document text
    • https://wekusov.files.wordpress.com/2020/06/ropuzegan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/12875207208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/81338683784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9567/0432/files/88015572325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/8817516389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/21095121453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/romiket.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_013_off0000fefe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFEFE 18176 bytes
SHA-256: 9a53eb0f5d899206140142024e1329928d04523b9b037af6ea44b3d64dff0b7c
font_00_sfnt_off0000808b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808B 5588 bytes
SHA-256: b044f7aea9bd4da09f60dbfa6c607eb09ad2994fa39cfb6d63ff774511ceb15f
font_01_sfnt_off0000941a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x941A 5020 bytes
SHA-256: 2bb2d20ade225035d82678ff9885cba96407a3d1c378183dc675a055b9d5231a
font_02_sfnt_off0000a50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA50F 2656 bytes
SHA-256: dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5
font_03_sfnt_off0000b013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB013 2328 bytes
SHA-256: 864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d
font_04_sfnt_off0000bac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC9 2108 bytes
SHA-256: d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e
font_05_sfnt_off0000c494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC494 6640 bytes
SHA-256: 538512be6c526ea957b587fa229624d829dca4873b622d187784a60d2c877fcd
font_06_sfnt_off0000d632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD632 12304 bytes
SHA-256: ace3cabc285a137ed64431194d190f54a436bbca23ad27fd0f6ed1096b4ee4ec
font_08_sfnt_off00011bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD1 3276 bytes
SHA-256: c12c670e310cd2dd0f4b1ea6ea0d01ef35e1284caa1cfc967b978b02bd897c09

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