Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc956482175a769a…

MALICIOUS

PDF

46.6 KB Created: 2020-07-29 13:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a164e5b77be012a18afd785ce6c0f27 SHA-1: 2f39107e354797e204b5f2c0109d67263e598041 SHA-256: cc956482175a769a0e9c2cea65c3b4e6ad06e1bf1f8b8cb77930f61232003b8d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=acls+study+guide+pdf+free'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/judegesuzopo.pdf'. The document body, though heavily obfuscated, suggests a lure related to 'Acls study guide pdf free'.

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=acls+study+guide+pdf+free In PDF document text
    • http://files.imtawexford.com/uploads/1/3/0/8/130873826/nasutivoxobov.pdfIn PDF document text
    • http://files.meditation-magic.com/uploads/1/3/1/8/131871772/puwuvasaxagizesew.pdfIn PDF document text
    • http://files.violinstringreview.com/uploads/1/3/2/6/132682048/0df45a91506fbe.pdfIn PDF document text
    • http://files.gallatinbreastfeedingcoalition.org/uploads/1/3/1/6/131637092/118d971e8f390.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/1/0433/0687/7080/files/judegesuzopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/rifumokidotewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/50527311209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31184917419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/litexovasuwadoxoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mipubafuminidumef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/depikimokuzomav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/wumubumafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/gijavuzejofado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/logopazunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/23988707509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/wewopirizipodiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8006/2878/files/42770733120.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

Related samples 8

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_off0000775f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775F 4872 bytes
SHA-256: 33722fb4979a4a775d1396fa39f3db601d5958200d932430bcdf0d93d453b0c6
font_01_sfnt_off0000880f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880F 11016 bytes
SHA-256: 3f10bbd6f18fc2e6ba04d9fcdce7dcc0b17cbde0daab59eea6dfbaed8768a6b2

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