Malicious PDF — malware analysis report

Static analysis result for SHA-256 613536397ca10ea3…

MALICIOUS

PDF

39.2 KB Created: 2020-08-20 02:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bbf79279fbe1a1b13e56ae186d54cf4 SHA-1: 7e229adc030686a99c0fbd60bed48f53d4ace3b5 SHA-256: 613536397ca10ea35d45d289c3e1b5f91d83bec94ab28e985c9bd2e073d2ef66
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and heuristic analysis. It contains numerous links pointing to redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=7408+datasheet+pdf`, which is likely part of a phishing or SEO spam campaign. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify and custom domains, suggesting an attempt to drive traffic to malicious sites. The presence of a link farm and redirector indicates a social engineering tactic to trick users into downloading potentially harmful 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.ru/pify?keyword=7408+datasheet+pdf In PDF document text
    • http://files.mayaolsonphotography.com/uploads/1/3/1/4/131454034/fofozu.pdfIn PDF document text
    • http://sisuxake.hmongumc.org/uploads/1/3/1/4/131437508/1956111.pdfIn PDF document text
    • http://files.thatsummer.org/uploads/1/3/0/7/130775565/1109077.pdfIn PDF document text
    • http://files.jessicasnyderedits.com/uploads/1/3/1/8/131856039/cee7ef.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/1/0434/5030/2616/files/duzaxevanonafupomunez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/midnight_commander_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/aladdin_and_his_magic_lamp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0445/9170/files/upsssc_admit_card_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7001/9994/files/attention_guitar_fingerstyle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8955/8680/files/69405557940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/jeteditarigad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6E 4068 bytes
SHA-256: 0e98be67eba76635c4b8fe859c6685a7f8be9ebe5c5fe1cf367e745f4f5b5c2f
font_01_sfnt_off000059e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 5408 bytes
SHA-256: fe0d066d763bfb9f136a4fc321cad836c38a41fe874e84fb0f399eed2ebc412f
font_02_sfnt_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 10184 bytes
SHA-256: d17e43a9ab0b94ac703ef777c4a17a66ff89507d67278e946758d5e4fe55032d

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