Malicious PDF — malware analysis report

Static analysis result for SHA-256 557bfd33759b049c…

MALICIOUS

PDF

39.6 KB Created: 2020-08-06 07:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7faf06788d4387e32db13d1eab948868 SHA-1: 6fa4041e64acaeceb73b260383427c53964f87c3 SHA-256: 557bfd33759b049c032306eafa0e10dc45240c509489b6eef005c7618ddf3a05
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at https://ttraff.ru/pify. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.ru/pify?keyword=diagrama+de+bimanual+pdf In PDF document text
    • http://files.sarkakocicka.net/uploads/1/3/1/8/131857120/kirudu.pdfIn PDF document text
    • http://files.donnamarieauthor.net/uploads/1/3/0/8/130813616/3137768.pdfIn PDF document text
    • http://files.barrenoneballet.com/uploads/1/3/1/4/131483281/cb2cdad.pdfIn PDF document text
    • http://milosunuw.houseofpainters.com/uploads/1/3/0/8/130874218/5918347.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/1/0437/6671/0426/files/58584760391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/vevutomoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/ginopiwutegimagusorugop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2087/6962/files/95791941576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/59666533917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/zanezabanubobajiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipipopiluniwewikojidil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/guwopemejaretibomijen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/gulugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/vonudadiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6960/4001/files/tusitagigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0703/9895/files/lukural.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_off00005e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6D 5320 bytes
SHA-256: 8ff9cc329afbdbaa2ba2d3ff95f2b0331073e08ece9bb58e711fcbdd83dd31bb
font_01_sfnt_off0000706c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706C 9740 bytes
SHA-256: 18cfddf1ad6c8ec15d7a941139c69117a77c6ce3819128376459cc6b82d3bb44

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