Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a097dcbc7c886b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 13:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c50532cdfbfddbbc7241e7c90c80945 SHA-1: 3b013890c04aa9d556d6aba51f7c84a867db9b2b SHA-256: 72a097dcbc7c886b598c5275f53f52cff10687b855220142d5a3bbb3a8c78819
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure, indicating a link farm designed to distribute malicious content. The presence of a link to a known malicious redirector and the ML classifier's high confidence score strongly suggest malicious intent. Although no scripts were extracted, the document body and heuristics point towards a lure for phishing or malware download.

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=video+maker+android+2.+3.+6 In PDF document text
    • http://files.crowlitmag.com/uploads/1/3/0/7/130775462/a15c0d911cfc61.pdfIn PDF document text
    • http://files.10xstocks.com/uploads/1/3/0/7/130775050/damesanuvitugu_firav_gawuvo.pdfIn PDF document text
    • http://pozusixil.wingrabrittanys.com/uploads/1/3/1/0/131070161/2352110.pdfIn PDF document text
    • http://files.sigmazetacouncilsc.org/uploads/1/3/1/3/131383384/06071370.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/1/0431/6607/2994/files/pofowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3211/7147/files/bhola_baba_video_song_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/20255469203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8962/9079/files/intel_crystal_well.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/tales_of_symphonia_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/1038821431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/neoclassical_economics_assumptions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/71796421942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/kedekudoxerelavuvodinav.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 4

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_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 5272 bytes
SHA-256: eabccf000a6e806c44ad7c260922100dd9f0828184d571c219838c8995cc4168
font_01_sfnt_off000079ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FF 10244 bytes
SHA-256: 09e7a2ea49c3b30956cbbe4020c078c28a127311594aeaf71ed16c03e95871ff

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