Malicious PDF — malware analysis report

Static analysis result for SHA-256 538cade62d2db35f…

MALICIOUS

PDF

51.2 KB Created: 2020-08-24 09:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 301c234e31fafec7b3f91c2a99ad9dd1 SHA-1: 89a3264c575648cb239df3d649f91b6b49215f61 SHA-256: 538cade62d2db35fb7869f98cec0ab33c7a0a91678cfa2809de464e5e5e01e27
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=root+booster+pro+free', which is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites.

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.cc/pify?keyword=root+booster+pro+free In PDF document text
    • http://files.pineriverassociation.org/uploads/1/3/2/6/132681670/filanu.pdfIn PDF document text
    • http://files.lisakadmire.com/uploads/1/3/2/3/132302987/jopuxun-wapemida.pdfIn PDF document text
    • http://files.ikhenkle.com/uploads/1/3/1/3/131384660/a55d645034.pdfIn PDF document text
    • http://files.greeceny468legionpost.com/uploads/1/3/2/6/132695663/tekutobezipakupu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/3463621948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jojanasesejunuveko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2113/1161/files/metric_conversion_challenge_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/emplace_back_vs_push_back.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/7918/9916/files/tifokaxadot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/xijazikonefiwavizelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5367/8493/files/22925596673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/2057023009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/64281500082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/11478186094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/jupusorowunuxetezasadeta.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E74 4432 bytes
SHA-256: 7d3bf264fc3d4c993113745142084200c1c90a831cc53f67dfc5f8906c4823db
font_01_sfnt_off00008d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D86 10580 bytes
SHA-256: 2f30e28f4efde243348bef0f9823c2eb8595396b8c01c6eb32107a94e266d666
font_02_sfnt_off0000b19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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