Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6ecab8de98e795…

MALICIOUS

PDF

43.1 KB Created: 2020-08-20 00:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34f5d160370dff6f2703f67beaff5b8c SHA-1: 36c35de82394689238309440c6345b6b08bbcdeb SHA-256: ab6ecab8de98e7958bcaab95cf3a6173678b6a72bbf54f65105a727f13b5a8ae
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=butterfly+valve+catalogue+pdf'. The document body, though heavily obfuscated, appears to be a lure related to a 'butterfly valve catalogue'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent, likely to redirect users to a phishing or malware distribution site.

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=butterfly+valve+catalogue+pdf In PDF document text
    • http://files.integratedbodymind.com/uploads/1/3/0/7/130776120/8050272.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/1/0429/6844/9180/files/jitakagupaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/punevumekefefarug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/81744711661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9531/7918/files/juregukafejarexulerujafar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/bragi_dash_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/infrastructure_as_a_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/throw_some_mo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0620/9702/files/corpus_juris_secundum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4563/3693/files/aplasia_medular_severa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/fhm_philippines.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000696a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696A 5356 bytes
SHA-256: f2c3896643e4a3913bb191f0cc149fcca5cdd5c914e4125b9600aba4ecae8727
font_01_sfnt_off00007bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBB 10452 bytes
SHA-256: 62498aa69466a1bb233f52c00a94c53360c8001c2b5fc674a51fdbd465142f48

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