Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6646c742ee00eb9…

MALICIOUS

PDF

112.6 KB Created: 2020-08-27 17:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01cf1b57745f249c961101941a23ff31 SHA-1: 4bb3d54b0ded6b734d11691e101c13c168af78d3 SHA-256: a6646c742ee00eb9df4edf7554d5309f5d25f25d07c3e555ca732a769b1827d4
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious infrastructure. Additionally, the document exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link within the document.

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=beschleunigung+der+drogen+-+und+biol In PDF document text
    • http://xapili.contentedcomfort.com/uploads/1/3/1/4/131483044/a857d5.pdfIn PDF document text
    • http://bavuli.personalpilatesma.com/uploads/1/3/0/7/130739235/d91eb7bf6b.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/1/0433/7244/5854/files/94260430640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2086/9019/files/browser_test_2019_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/76263016599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/xuxisezikusigezemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/gartner_blockchain_report_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/11318764023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6395/8938/files/the_nature_of_genius_mini_ielts_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/jewamuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/livukovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/28937615743.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_off00016d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D5D 5012 bytes
SHA-256: cc40ff0e79012f7776278701a6e726fd433bea467fdd497d6748b63c044ae7a4
font_01_sfnt_off00017e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E4A 12512 bytes
SHA-256: a1f022eab0ce8037d2281896c966c864bf4845022a57cf751e0496678b856578
font_02_sfnt_off0001a523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A523 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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