Malicious PDF — malware analysis report

Static analysis result for SHA-256 f176eae751451fd2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-21 12:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c70011795f3d1803ca9fe11ff30f643 SHA-1: e7b1be07510be82f0d3a615b60af9f8614793c49 SHA-256: f176eae751451fd2c84d8acf0eea58a612934ef0cb80b5a1126c9def6a505b0a
194 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which points to a known malicious redirector at 'ttraff.com'. This heuristic, combined with the ML classifier flagging the document as malicious, strongly suggests a phishing or malware delivery attempt. The document body, though heavily obfuscated, also contains the same redirector URL and a benign-looking Shopify URL, likely part of a link farm to improve search engine visibility for malicious content.

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.com/pify?keyword=twinkle+twinkle+little+star+piano+sheets In PDF document text
    • http://files.coastalsilviculturecommittee.com/uploads/1/3/1/8/131857540/renavote-ganegenizosi.pdfIn PDF document text
    • http://files.nowforyoga.com/uploads/1/3/1/4/131407369/aac739e2d9d32.pdfIn PDF document text
    • http://jixujel.africaspectrum.com/uploads/1/3/1/6/131606346/5005215.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/1/0446/6167/0051/files/joindre_facebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9784/7976/files/diploma_standard_strength_of_materials_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6540/8662/files/88014693892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9170/6263/files/unreconciled_transaction_report_xero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/child_hd_images_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8176/0935/files/achilles_tendinopathy_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/betetumowinubipuguwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/nice_wallpapers_for_android_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/53014780287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6119/8500/files/tulinegipuzigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.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 5

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_off000061a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A5 5012 bytes
SHA-256: 8624cc881bb3333b30cd956ef7bdccb86b9cd53f2b0f11df13bf917983855648
font_01_sfnt_off000072bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BB 10616 bytes
SHA-256: 2328b7fdb8c7a2d3e5b9139acf1580d078768c57f47d9a2f3ba7671de3b188ca

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