Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f154368b05e5e4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-26 23:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 795f3ff441a99e100912a8a7a4d0aac1 SHA-1: f7809982299deb7e31f866b89393e5718a0ed197 SHA-256: b1f154368b05e5e4951ef7ef40054bd80046d9e616d4a74ae38ff188a14017ad
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to shopify.com domains, but one critical heuristic identified a link to a known malicious redirector. The document body itself is heavily obfuscated, but the presence of the malicious redirector URL and the link farm heuristic strongly suggest a phishing or malware distribution attempt. The primary malicious URL identified is https://ttraff.com/pify?keyword=historia+de+las+razones+trigonometricas.

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=historia+de+las+razones+trigonometricas In PDF document text
    • http://zafute.dawnmariehamiltonclarinet.com/uploads/1/3/1/1/131164250/pedepusof-lamosesawuboli-kekerizajes.pdfIn PDF document text
    • http://files.theorwellscommunityshop.co.uk/uploads/1/3/0/9/130970003/febus-bolepevekixep-ronanukefijuzi-gefubos.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/1/0463/8883/8555/files/14749256002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/gabasuxarupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/winitadorubefesilamapudon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/kabhi_alvida_naa_kehna_lyrics_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/zubedumawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/26629226061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/93757189568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/safix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/17903990057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/perimetry_interpretation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/getebepijerowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/binebefiliperutewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.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 1

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_off00006710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 5268 bytes
SHA-256: 350b9314a10bec7eca04bb264b4783c9d4b87d1a19c0f6fe6138d26fa8c660d1
font_01_sfnt_off000078dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DD 10872 bytes
SHA-256: 19d7cd11369ad0f7b2cff5f1f4179a245ce99df75ebab816876b1507a0696058

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