Malicious PDF — malware analysis report

Static analysis result for SHA-256 2627ee03f32ba290…

MALICIOUS

PDF

44.6 KB Created: 2020-08-03 15:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 432a511123f54b98ba1c83a4da170b77 SHA-1: 7c340d890c46ced88189e0eeef9d22786415a33b SHA-256: 2627ee03f32ba29092ed7eacfd8c72de84c6c749f245e59a82897cd97e686b55
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=medical+biochemistry+mcqs+pdf'. The document body, though heavily obfuscated, contains text related to 'medical biochemistry mcqs pdf' and the URL itself, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates malicious intent.

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=medical+biochemistry+mcqs+pdf In PDF document text
    • http://files.robertzant.co/uploads/1/3/2/7/132740978/42d70cadeaf1d.pdfIn PDF document text
    • http://files.professorcarson.com/uploads/1/3/2/6/132695336/roditigutev_sadavazopoki_zomejelopixab.pdfIn PDF document text
    • http://files.frauhoeckner.com/uploads/1/3/1/3/131380213/tupivupatop.pdfIn PDF document text
    • http://files.fixfonezfast.com/uploads/1/3/2/6/132696029/1cad3b61ca381.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/1/0434/8257/9110/files/dijesojusoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/48029167487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/ferafoxeledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2630/0577/files/57100806558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3872/8611/files/lofoxuraxonokobefegelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/rexitig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/xidagamipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/99399911770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9981/4056/files/35809196381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/77201221779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/jexibugovofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9489/9874/files/56585596224.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 8

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_off00006c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 5768 bytes
SHA-256: 1ea79e7abf9b8de9529e094931e503b8ebcbc244bc9f6a8c12d4fba66ac0b66a
font_01_sfnt_off00007fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 11556 bytes
SHA-256: 77c649c70102b55fed77f9237aeb83e49597f607dc23c7dae66d8ae66de91dd1

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