Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d6d71718b95a2e…

MALICIOUS

PDF

66.6 KB Created: 2020-08-10 00:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 756d53288fa6a2ace7bed35cca17ecc6 SHA-1: 56fd0c0ebd55e603fbc071075047ab1e9f41be00 SHA-256: 84d6d71718b95a2efcb2e40eb14ef8578cb6f952c002cd5ea01563224c6b48ac
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body itself is heavily obfuscated but contains the same redirector URL and several Shopify URLs, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to a phishing or malware distribution scheme.

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=approximation+algorithms+and+semidefinite+programming+pdf In PDF document text
    • http://files.bureaunl.com/uploads/1/3/2/6/132695730/kiwekokuruloz_gezef.pdfIn PDF document text
    • http://files.henryfusco.com/uploads/1/3/0/9/130969992/warajazunuz.pdfIn PDF document text
    • http://mizozoz.myangerundercontrol.net/uploads/1/3/1/0/131070152/pudibisad.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/1/0430/2585/8711/files/manujaxokurox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/aide_mmoire_anglais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/alfabet_po_angielsku_wymowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/33590415003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/werigaxupila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/87625098680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4243/0362/files/angielski_sownictwo_chomikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8817/5513/files/77283248295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0292/3939/files/akhand_jyoti_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/lujunuror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/90000814408.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 5

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_off00009f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8D 5512 bytes
SHA-256: 80d6d9bbb4d0d430cfb527535d2df851f31743c18b2c56678ca201ff3a8845c2
font_01_sfnt_off0000b221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB221 15964 bytes
SHA-256: 930c72cd755e5d33cb0e620cfa5e9542b966adc67623f5f9769d7cba6661ff4f
font_02_sfnt_off0000e371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE371 16628 bytes
SHA-256: aa830a663b780f723d7660a38ae6cb97e10967eedb11c3a65d9738ce7c9248ad

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