Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff2d87e38cf73c2…

MALICIOUS

PDF

41.2 KB Created: 2020-08-14 14:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c6da01a8ca51995e88d35fa149901a9 SHA-1: a49220cedd2e940c26a66c5f6a8b67f2123136a3 SHA-256: eff2d87e38cf73c25456a6d3b418b84c12e747700f473dd9611fd8623c26d577
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass of external links, including a critical redirector link to 'https://ttraff.cc/pify?keyword=attestation+de+salaire+accident+de+travail+pdf'. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content. The document body, though heavily obfuscated, also contains references to the redirector URL and numerous other PDF files hosted on Shopify, indicating a link farm strategy.

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=attestation+de+salaire+accident+de+travail+pdf In PDF document text
    • http://fesumojoj.driggspleinair.org/uploads/1/3/1/6/131606552/dulujo-tomixorirasogi.pdfIn PDF document text
    • http://files.empoweredspirits.com/uploads/1/3/0/7/130738637/4ae4e9caef.pdfIn PDF document text
    • http://files.brushworxstudio.com/uploads/1/3/1/4/131483067/sopaxovuxejinevixijo.pdfIn PDF document text
    • http://files.dodici-azpadu.com/uploads/1/3/0/7/130739059/biratekobes-safam.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/1/0428/8079/4780/files/bivusinedunotujavar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/gasifemezurunexiborigoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4178/files/kawiwesave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/wifugiroguropowilated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5443/2410/files/69924872431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/3495954263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/relaminibido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4673/9866/files/jopojodoxasukukoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/70600077132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/43737318054.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
🗂 Part of campaign: org.sg 5 samples

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 5196 bytes
SHA-256: af1722ca1c34c1cf987f8e29d3b2475cf5611470454c5b85afebae6e79996295
font_01_sfnt_off0000720f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720F 11076 bytes
SHA-256: 6d1fc3724b2d6e9cda0492edad39e1f27a75005a8da54dce945cf162ef559663

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