Malicious PDF — malware analysis report

Static analysis result for SHA-256 161a0123e3cfbd51…

MALICIOUS

PDF

55.1 KB Created: 2020-08-07 13:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d90239932effa66b9627a8dce97a6d60 SHA-1: 690fa9b31de359817d62261c92775c07aff509ea SHA-256: 161a0123e3cfbd51382cd7c595b8079c70f4aaa017b5b9ddb7238831b7af7074
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious URL, identified as a redirector for potentially harmful content. The document body, though heavily obfuscated, contains references to the malicious URL and numerous other PDF files hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The ML classifier 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=adverbs+word+list+pdf In PDF document text
    • http://files.theshopatgermantownanderie.com/uploads/1/3/1/8/131856232/jamurosidaguna.pdfIn PDF document text
    • http://files.model3dbiology.com/uploads/1/3/1/1/131163910/rosigedo.pdfIn PDF document text
    • http://files.ivasi.org/uploads/1/3/2/6/132681463/2756612.pdfIn PDF document text
    • http://files.headrushroasters.com/uploads/1/3/0/9/130969446/166686.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/1/0433/3407/4523/files/35739337763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/vabuzotunigirojakaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4020/9056/files/35400923001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3584/3994/files/41266006718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/semalekujasuziket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/somoragukisasukotixoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/gipakepotemokor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/wezumukulusaxebuvaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/rabudopoxojukiguxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/kayla_itsines_workout_plan_free_download.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 1

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_off00009c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2C 5104 bytes
SHA-256: 8b3628cb10c7c2824daaa284b4412394ee7b5d9ed70153f969d2d5b33f31a622
font_01_sfnt_off0000adaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADAA 10088 bytes
SHA-256: 44b11049f52ebd874a91b762ee307c6382ec5dfa978586cdbb55443bfd7447a7

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