Malicious PDF — malware analysis report

Static analysis result for SHA-256 21649d51ba301b77…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 21:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9df51d3eeef13aab18ff684f63473bd SHA-1: d33df708cfbc260f4202cb3313f0f9807636e49d SHA-256: 21649d51ba301b77c2d465cc4553922c4cf4ab3f8aee8960ebb788d60af45e31
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=wifi+adapter+beamforming', suggesting a lure related to technology or networking. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to malicious content, likely for phishing or malware distribution.

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=wifi+adapter+beamforming In PDF document text
    • http://files.orchardfarmandcottages.co.uk/uploads/1/3/1/3/131379732/4480759.pdfIn PDF document text
    • http://files.singingsawpress.com/uploads/1/3/0/8/130874180/logid_godufovipubis_tatuma_xizarepewozip.pdfIn PDF document text
    • http://files.conservationaffair.com/uploads/1/3/1/8/131859993/8159197.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/1/0434/4066/8838/files/37536834166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/35550097046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/71220935147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5792/9622/files/palaxetejinukoraviwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/82635204031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9433/8712/files/59834596614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/fomuzexudusudulejare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/99388792602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/layunin_ng_akademikong_pagsulat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/65772182999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0278/9789/files/21182840618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/accounting_resume.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_off00006ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA3 5304 bytes
SHA-256: 5826a5c618d906c11fb10e0ff391cebba2eef46bb292d4f8a73afe99621b2093
font_01_sfnt_off000080a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 10204 bytes
SHA-256: e54cee2cde950f5266e4387e58dd160c5b95b3070e63afbb8264bae6e0a520d1

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