Malicious PDF — malware analysis report

Static analysis result for SHA-256 d53e0fa2a7dd13ad…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 04:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5ad1245f5b7101a838e96660c45c54e SHA-1: 5474e8c401535d2fd954800597e2cb75231f72a4 SHA-256: d53e0fa2a7dd13ade2b51d077a04cf28fe6d4c441400c9ca4789176bebdbb1e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with critical heuristics identifying it as a malicious redirector and a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify, suggesting a lure to download further content. 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=hormona+antidiur%25C3%25A9tica+adh+pdf In PDF document text
    • http://files.isabelledejoyavea.com/uploads/1/3/0/7/130739234/faporob.pdfIn PDF document text
    • http://zefifos.tngsblog.org/uploads/1/3/0/7/130738615/fe31c37230a.pdfIn PDF document text
    • http://files.croxleygreenhistory.co.uk/uploads/1/3/2/7/132712268/3766060.pdfIn PDF document text
    • http://files.ukprestigeproducts.com/uploads/1/3/1/4/131410736/7893048.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/1/0430/5335/1066/files/libun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/34043932440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/zupitaxugizuzipamepeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/dovulekuzagelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/79676574172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/meniselije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/lobosulixeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/sifisupolezagamupokosot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0231/3373/files/60979196497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/furuzefebofezinadofijezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/lirenikizadikavizoxena.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_off000073a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A3 5288 bytes
SHA-256: 6ad50ba10f42a9ec86a36a36a32140a50c528b96815f6b030c6d454ebb227873
font_01_sfnt_off0000852c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852C 11320 bytes
SHA-256: 8cf6e0477c63da69a83e140528ee3d49046271bf2043551fe81b1851efe67936

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