Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3efe47b53813657…

MALICIOUS

PDF

44.6 KB Created: 2020-08-20 06:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2607445f5de71ce7a9d766d5c6f68966 SHA-1: 575053d15901e2f0ddb3aa58bf3b76b58f610151 SHA-256: f3efe47b538136573899f2b78af7808f78230bbbe6d4ee125c0e5e53d6de8593
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised with a seemingly relevant keyword. The document body, though heavily obfuscated, includes the target URL. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious links broadly. The ML classifier strongly indicates malicious intent.

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=cqc+report+eagle+care+home In PDF document text
    • http://patalaro.cworxtraining.com/uploads/1/3/1/6/131606027/kuxeke-xuvojumevige-bidamematovasom.pdfIn PDF document text
    • http://famozofu.mmetraining.com/uploads/1/3/1/6/131606407/vetozit.pdfIn PDF document text
    • http://files.teachermaxwell.com/uploads/1/3/2/6/132681156/9512177.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/1/0432/0608/2717/files/64832231420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/canales_de_distribucion_internacionales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0630/4153/files/manorama_news_today.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/12537544165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/56035852117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/schlage_keypad_locks_programming_guide_fe575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0999/files/12949394763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/nrsv_apocrypha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/zorubakixazamomevigogukip.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 3

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_off000072c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 5200 bytes
SHA-256: 2d0dafadf4de1fff98221db21ee49df34f5b39ef19cca80c709bb7329ffa5867
font_01_sfnt_off00008448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8448 9816 bytes
SHA-256: 6bfad3eb5c76aef42e2c881ac0d3fe13446201adea7d045ae2f2fdc673e1c68a

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