Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1af6b9731aa830…

MALICIOUS

PDF

41.9 KB Created: 2020-08-17 18:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02007a8d979ca1632549f0564f3a02c1 SHA-1: e4d325c500d86f9ec705fb3c5a4f22cda375d8ad SHA-256: 7f1af6b9731aa83092840f089dbb432ea722f3945095f3fe58eb3e0a36187843
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body and heuristics indicate a link farm designed to direct users to potentially malicious sites, masquerading as legitimate PDF downloads. The ML classifier strongly supports the malicious nature of this PDF.

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=guide+bce+icaap+ilaap In PDF document text
    • http://lifil.tascdist4.org/uploads/1/3/1/6/131637814/nexawawenawaxiduti.pdfIn PDF document text
    • http://files.vtnhcda.org/uploads/1/3/1/4/131452935/fevamokusip-tizibaganojufer-vilak.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/1/0448/1181/3015/files/search_scanned_files_for_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/pufatonejezapawizimota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/ultimate_candida_diet_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7786/1527/files/68568942130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/jumbled_up_sentences_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/lawozaruzuridi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/14852898376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/mozafogipez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/38645900826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6260/7518/files/99528973532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/kelejajotixuguzar.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 1

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_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 4964 bytes
SHA-256: 22aea7a3bfab09c77df1a0539be3ac0a862fcf01ff18d9fb0d26194d250e1034
font_01_sfnt_off0000796f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796F 9804 bytes
SHA-256: 3abfa54a95d3e7721b45e3f9917503c0c13ccda3f58d3531c17b3d8a928f6b12

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