Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8d8abf254f6a6c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-10 14:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b64e92e8a419765b59eba6860269b2f SHA-1: 75298008154ace9de20221d03f7d1962aef380ee SHA-256: 5a8d8abf254f6a6c847029810150b781d7551319a92e770b4e5ee8cb0e73b5d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body itself contains a URL that leads to this redirector, suggesting a phishing or scam attempt disguised as a free download. The ML classifier also strongly indicated maliciousness.

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=categories+of+drugs+in+pregnancy+pdf In PDF document text
    • http://files.healthyvasquez.com/uploads/1/3/2/8/132814276/sumenikulutib.pdfIn PDF document text
    • http://files.zippiteeshirts.com/uploads/1/3/0/8/130813841/pusij.pdfIn PDF document text
    • http://files.lesmarmitons-sandysprings.org/uploads/1/3/0/7/130776158/4878725.pdfIn PDF document text
    • http://files.eightgates.co.uk/uploads/1/3/0/7/130739061/vudaxipuwim.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/1/0430/0396/9689/files/38884848647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9906/1408/files/tigujiludiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/xoruretumatifefeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/anexo_19_oaci_segunda_edicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/the_art_of_shakespeare_s_sonnets_helen_vendler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/lebozidigepabud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/xezegun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/tadamatotenexaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9967/5040/files/2015233578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/simozudilus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/agile_software_development_principles_patterns_and_practices_martin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/segedovatoxixefasaba.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 7

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_off000067dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DC 5300 bytes
SHA-256: ef1ad7cf1c9b2cdd823ecb41bf7d53fd12f96256f7a0c955170874395723caf9
font_01_sfnt_off000079fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FD 10248 bytes
SHA-256: b4d134e5e45586abaebe055ccad397401d5e11d8f17587e48cc95011c34fda33

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