Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b5c5ac3bc7f83c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 06:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b7fa471885df3592675ddc203c81281 SHA-1: 76dcf485a45317d41b2fe7851ee6a16316293788 SHA-256: 99b5c5ac3bc7f83cf090d39479474d152f31b6736846e72eceb3ee1be63881c4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for phishing or malware distribution. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious sites. The document body, though heavily obfuscated, contains the URL that is also present in the heuristic firing, suggesting it's the primary lure. The presence of many Shopify links appears to be a technique to obscure the malicious redirector by blending it with seemingly benign 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=genetec+access+control+pdf In PDF document text
    • http://fafip.artentwined.com/uploads/1/3/0/8/130874655/7cbb628596925.pdfIn PDF document text
    • http://togaxekuz.obchaymarket.org/uploads/1/3/0/7/130738732/kapereses-buwemuriw.pdfIn PDF document text
    • http://files.diamondwoolpadco.com/uploads/1/3/2/7/132741181/jagepokavibexeko.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/1/0430/8392/3609/files/11027092917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/96216832977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/2516975013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/mipukug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/36585712562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/9036645652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/42861096517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/75801277750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/icy_veins_havoc_dh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/fundamentals_of_aerodynamics_anderson_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/kunanojisubokowusox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1887/1207/files/96362443540.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 2

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_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 5180 bytes
SHA-256: 16ea1b326ebd085d52a2b4a920381e8d10d4a8fb629d657ea70dde53f1aff5f1
font_01_sfnt_off00007718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 9824 bytes
SHA-256: d0af65e903247056878af395b80db7a5840a6eec42b8b594d793f03c2336001c

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