Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a0189536ab4b72…

MALICIOUS

PDF

76.5 KB Created: 2020-08-06 20:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 138c6d3c9df90702f5a68ecbbe01b637 SHA-1: 00a171cb26c03fd5cdb16dc0794d049b7280cd67 SHA-256: a0a0189536ab4b72e3113cf521524605e7baafb305b39a185c6ea9ced902b60d
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains multiple heuristics indicating malicious intent. Specifically, it features a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=biosensors+journal+pdf'. Additionally, the document exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains, likely as a tactic to obscure the true malicious destination. 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.cc/pify?keyword=biosensors+journal+pdf In PDF document text
    • http://files.mtmsmusic.com/uploads/1/3/2/6/132682851/4080665.pdfIn PDF document text
    • http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.pdfIn PDF document text
    • http://files.murdochmackenzieofargyll.com/uploads/1/3/1/1/131164153/6fdffe9632.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/1/0439/3854/5819/files/17344427872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/logiciel_de_traduction_de_fichier_anglais_francais_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8138/8452/files/closest_teleport_to_fairy_ring_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/biology_science_for_life_with_physiology_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/93161120570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/nipitazabanod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9525543421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/tifofutejisima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/tawuwefabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7461/7511/files/xobenuzuxetulafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/vuzegefetuxes.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 8

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_off0000ef06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF06 5160 bytes
SHA-256: aabfc5a218fe026866d8317c6873fe61e1dccc30a929aaa7132183663ff686a8
font_01_sfnt_off000100a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A5 10584 bytes
SHA-256: 300c5320b4a0b5f07da2a4c912b4907d9df1bf755248372b0c1d0084041f6433

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