Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c4ce72889380b6…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 11:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96e59778ec50c5af12a6c9763da7f09f SHA-1: 80f717bf04e68a9c26f829e4b4359bc9f44a1b3e SHA-256: 58c4ce72889380b61728542c18ef0d8f41878e7387ffb4da794ff15536125b03
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to lure users to a harmful site. The ML classifier strongly flagged this PDF as malicious.

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=larson+algebra+2 In PDF document text
    • http://files.umna.org/uploads/1/3/1/6/131636728/felepumulivajel-divotorotalir-xamorososiru.pdfIn PDF document text
    • http://files.pallavisharma.com/uploads/1/3/0/8/130814205/883165.pdfIn PDF document text
    • http://files.fourarrows-ranch.com/uploads/1/3/2/6/132681556/xudejelewofili-xikevipujalox-gizikuvaguke.pdfIn PDF document text
    • http://files.buttercupbakerymb.com/uploads/1/3/2/6/132695651/pilegato-sisexokivekased-mavejen.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/1/0439/2402/9608/files/dojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/68699114605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/ginosodesajevifabopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0936/6427/files/3108955940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6060/6616/files/wedgewood_stove_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/44068206650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/38001793014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0383/7591/files/39383726299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/tamisuvejufutusatigoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/baxavuvepasolavizekufar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/1159762382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4442/2310/files/27125564085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7A 5064 bytes
SHA-256: 9bc0302d10642305b60d98e73b11b58cf79394986b4e00c5c18a378e58a53d83
font_01_sfnt_off00007bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC2 10084 bytes
SHA-256: 306ee10fe57b65d9dd923c01c200bb0704dd0378f45c554a1bad229ea07e99cb

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