Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae981f476bc8f686…

MALICIOUS

PDF

53.3 KB Created: 2020-07-31 14:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11a07a8f6e407c7a8ab28196508fbeb9 SHA-1: 83c112ccbf9716f527a4f0f7ce20e95e9c5368ea SHA-256: ae981f476bc8f686e0d9fa6d424c574f5eb52c04ae855b081bd2313e52b8912e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of numerous links, including one to a redirector, suggests a phishing or malware distribution attempt.

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=cell+culture+pdf In PDF document text
    • http://files.mybeauty.services/uploads/1/3/1/6/131637279/2633389.pdfIn PDF document text
    • http://files.lavenderrosefarms.com/uploads/1/3/0/7/130739704/2137413.pdfIn PDF document text
    • http://files.janellesmithnutrition.com/uploads/1/3/1/6/131636682/pojebepipikixap_xedopake_xokirajabejarok_novako.pdfIn PDF document text
    • http://files.sugarbakeshopperi.com/uploads/1/3/1/4/131408250/079c43.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/1/0430/8048/2967/files/dakufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/52356636583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/lojebuwitefewetetasenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/nisuvanukuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sedafasejizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/57540534576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/46745351397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/petijakejifom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/vedutekaxexuriwimufoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/40169239592.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_off00009716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9716 4404 bytes
SHA-256: eaee9b4b59c98239da69454bf8ac07b3d538c6f864454c01248a29a82a7d6976
font_01_sfnt_off0000a61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA61F 9872 bytes
SHA-256: ffa896a2975c7b649f29182c5c40cda235e4b5f69cf98e673775117991c52958

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