Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3c95ec6628c6bf…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 21:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bfb4d18825d79631f18c0329937b102 SHA-1: fc112cf32d89a26cad90e848e1732acff70ad8a3 SHA-256: cb3c95ec6628c6bfc8ff9ab0c6175a5a0c7f0be2a1c19b8778c17dfc4e750a83
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure for 'hacking guide kali linux'. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. The primary attack pattern involves tricking the user into clicking the malicious redirector link.

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.com/pify?keyword=hacking+guide+kali+linux In PDF document text
    • http://zirov.austin-brady.com/uploads/1/3/1/4/131437657/zokatemokovim.pdfIn PDF document text
    • http://vufud.kmid.com.au/uploads/1/3/1/6/131606156/2150784.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/1/0440/4648/3606/files/zepodew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/46471082918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9377/0919/files/rosetta_stone_japanese_bittorrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/rosaguvigugotiwukan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/76781912234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/d_d_way_of_the_long_death.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/boxowite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7352/7203/files/tumereseluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/30459025870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/gugasesisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/59453996335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/verb_form_of_choose.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_off000067ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FF 4924 bytes
SHA-256: 0c1d8d8a8ba5f2d9d24c74f47aad21756133601f718052bb1ef7949945547471
font_01_sfnt_off000078d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D1 10600 bytes
SHA-256: 84ed57f1b48beef66354abd3c4b1dc7d33ebcdf6ca436a03ddb0afddd967dea7

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