Malicious PDF — malware analysis report

Static analysis result for SHA-256 0403f8e0149d1008…

MALICIOUS

PDF

119.3 KB Created: 2020-08-12 03:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d26880b55342d698ed4f3071c442256c SHA-1: 3a12adbc5c4952a2833e86b45a155d2352d1d1fc SHA-256: 0403f8e0149d10080ca12f69035ec4fb365afa8b61ae2ded20348eee3ba50c3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into downloading content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/wb?keyword=grammar%20of%20the%20gothic%20language%20pdf In PDF document text
    • http://files.rosamysticaofamerica.org/uploads/1/3/0/7/130776403/zadedej-simuzojopipeb-wevexetimudiv-fiwixitari.pdfIn PDF document text
    • http://files.slightlykneady.com/uploads/1/3/0/8/130813988/2158005.pdfIn PDF document text
    • http://files.kghypnobirthingsouth.com/uploads/1/3/1/3/131379877/aa49db207d94da9.pdfIn PDF document text
    • http://balagon.themindfulchristian.net/uploads/1/3/2/6/132682883/8ac6d55cee44.pdfIn PDF document text
    • http://files.wekesa.net/uploads/1/3/2/6/132696598/e9678149de61d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/realistic_rock_carmine_appice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/kanudotupufewubowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/22977550365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/lg_g3_unlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/mevumab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/noriruzigulefijelimupegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/kaxuxuzadegimes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/tidajagadusiloxoxutiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/61045681303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/cat_416_backhoe_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/winogala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/31974943755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/miller_welder_manual.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AE8 12088 bytes
SHA-256: 674c76af1353fd81dfcf08a7453488e38160dc12a1eb5ebd8144ca09ed63f926
font_01_sfnt_off0001586b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1586B 5304 bytes
SHA-256: 97665c2e3edd45da125daf85c02847ace5cd38f3c104818e0e5f5f370e725ba7
font_02_sfnt_off00016a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A4E 22884 bytes
SHA-256: 5d4331d1eb8544e1587c3475eadab9499779c0a0b7175ff3becb055d14f2247b
font_03_sfnt_off0001abb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABB6 16116 bytes
SHA-256: 2650953734bc47387e7657ecfda98388c46aab4f6ce1b70d6c4123b7a8b84dab
font_04_sfnt_off0001c090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C090 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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