Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36cd2a57511ef22…

MALICIOUS

PDF

83.0 KB Created: 2020-08-12 08:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b1b4903e3d28c65bcce7a2a338f6450 SHA-1: 55781bda6c10cae0ab37f8a94532b6305fe71acc SHA-256: b36cd2a57511ef2295fb0821f4e3c6d6c6c96d22fee30791481b210b9d016133
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One of the primary links, 'https://ttraff.ru/pify?keyword=fun+personality+quizzes+for+adults+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to potentially harmful content through a deceptive lure.

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=fun+personality+quizzes+for+adults+pdf In PDF document text
    • http://files.drorangejuicer.com/uploads/1/3/1/8/131871907/zimibawekapes-furoluviri-zumewosuxotigin.pdfIn PDF document text
    • http://files.hustlecary.com/uploads/1/3/1/6/131606059/4149304.pdfIn PDF document text
    • http://files.nudeandtrue.net/uploads/1/3/1/8/131871992/durod-dimuka-jopatoderofexuj.pdfIn PDF document text
    • http://files.innovationsbuildingservices.com/uploads/1/3/1/4/131438150/827431.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/1/0437/4754/1153/files/vugukikiregazutesilal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/zulelenuvawifebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5759/1960/files/xekokozifowegorasudamufiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/32789015547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/vinayaka_vratha_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/algorithms_robert_sedgewick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/90587690483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4786/1928/files/3685117778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/preschool_phonics_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4092/9957/files/make_directory_python.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 7

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_off0001084c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084C 5268 bytes
SHA-256: 240d784f2a86144cdfe6ad83169e3aa350be18d77e16e0437e583623fb6892e7
font_01_sfnt_off00011a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4F 10564 bytes
SHA-256: 0dfd27308703425b8a46a7053daf2adf5f40eeed3da0e7fe5d010912e4b52d35

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