Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2da609c708a584…

MALICIOUS

PDF

49.3 KB Created: 2020-07-29 16:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df4417a0af2c49d96b564f272dbe9c63 SHA-1: 88e409a50465fb91d2f73204ba2a1bcf08e1c8aa SHA-256: 5f2da609c708a584728055f02e017917217e646c93c29ba93b1d80d75367fad5
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs hosted on Shopify, disguised as free downloads, and redirects to a malicious URL. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the presence of malicious redirector links and a link farm designed for SEO manipulation. No scripts were extracted from this sample.

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=minuetto+boccherini+pdf+piano In PDF document text
    • http://files.colorsforacause.org/uploads/1/3/1/4/131453221/4254787.pdfIn PDF document text
    • http://files.twobitranchphotography.com/uploads/1/3/1/3/131397973/nupiradofarivo.pdfIn PDF document text
    • http://files.educatorlaurawynn2.com/uploads/1/3/0/7/130775145/f612c3b80.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/1/0430/1769/9477/files/giwime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6071/files/7850363364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/gaselifixerujatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/47697856235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/taxexezoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/povakak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/jevixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/wevuvaraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/88201681071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/kurejutizavofubozaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/vurawejulogomasadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/72376879453.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 6

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_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 5060 bytes
SHA-256: 639f080b6c4b75567f364bc0bc9f696cbd017823f481ab918ccaa184480e3c21
font_01_sfnt_off000093b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B8 10544 bytes
SHA-256: 13d548d4cea6c914381465bc8c633f870f2e49a45e8dff46c8ca8d60cda90d07

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