Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c853a810704e29b…

MALICIOUS

PDF

47.7 KB Created: 2020-07-29 11:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8236b26a3f20192f65eda9f1c4073188 SHA-1: 7aa30366780547079ddde8f8a8a4de757400fc2e SHA-256: 8c853a810704e29b0dbdb4bbafe4035f890e395fde160dd28ba3f551fecabe51
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating an attempt to direct users to potentially harmful websites. The document body, though heavily obfuscated, suggests a lure related to 'cancer information in gujarati pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel traffic to further malicious destinations.

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=cancer+information+in+gujarati+pdf In PDF document text
    • http://files.maryhvance.com/uploads/1/3/1/3/131383743/b450c9.pdfIn PDF document text
    • http://files.artifexhomesolutions.com/uploads/1/3/1/8/131856318/lokov_zudinalotaxitop_bofidaf.pdfIn PDF document text
    • http://files.leavingtheninetynine.org/uploads/1/3/0/9/130969695/rimos.pdfIn PDF document text
    • http://files.seattlemobiletinting.com/uploads/1/3/0/8/130813132/7470819.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/1/0432/0935/9520/files/mevuxubaxozerijiranumubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/kodaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/fozemijonijonibereko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/12215243909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/gilixegifokevimezawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/kogufinisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3887/3512/files/wuzalumosuviguvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/lijoziwonaluburomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/92891889523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/zubukovugosadisiliruda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/34954661816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/86511440649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/tupesizisokupolexotuxe.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 6

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_off00007d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0E 5248 bytes
SHA-256: 38e12c5ca4d1e841165a7acb973d90f401074982b99930c3212d22570f7ec97e
font_01_sfnt_off00008ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED5 10080 bytes
SHA-256: 3041a8b9fe218d5f2f3e7a3c3831cc8a7eeef4932e7e20c94c36ef8066f75462

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