Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b8c5ca83b6b300f…

MALICIOUS

PDF

55.3 KB Created: 2020-08-25 10:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3060476dc735cc942834aa9fb3bc3e8 SHA-1: e8fa2c979ce657b53a0e46d6592c59c8a95eb59f SHA-256: 1b8c5ca83b6b300f2737fd2025ad8794c9e44d9cf2fd4b2bead53f92c37f81f7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious URL, disguised as a movie download. The PDF also contains a large number of links to other PDFs, suggesting a link farm or redirection scheme. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and heuristic firings are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=film+asoka+full+movie+sub+indo In PDF document text
    • http://nejinip.vrmotorsport.co.uk/uploads/1/3/1/1/131164110/donoromukomegilubom.pdfIn PDF document text
    • http://files.goldenrootgardening.com/uploads/1/3/1/8/131872137/6045654.pdfIn PDF document text
    • http://files.premiereemcee.com/uploads/1/3/1/6/131606159/874c247a10876.pdfIn PDF document text
    • http://files.upstagingdesign.com/uploads/1/3/2/7/132740692/436f368f2.pdfIn PDF document text
    • http://sifufepof.mahakaitreasures.com/uploads/1/3/1/3/131381241/vakozekurame_mukale_kafam_libuwasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/a_moveable_feast_hemingway.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3350/files/channing_tatum_pony_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/34151534150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/parametric_design_in_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1047/4663/files/ruxilad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/zanuzijavamurogelakiriwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/7180/1253/files/ragefupafibuwanobu.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A8 5176 bytes
SHA-256: c2cdf492b0917eebd86f0c8614b31b1f119e1dd1fe587263e6f16f1969b8dcbe
font_01_sfnt_off00009735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9735 10536 bytes
SHA-256: 6a8d2dada0bd37c5d52437ab9b0497cf249b58b168d25083e3cbdd1b58a4a372
font_02_sfnt_off0000bb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB6F 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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