Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0acf718f3dba04b…

MALICIOUS

PDF

42.3 KB Created: 2020-08-23 06:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9183d0e359338eee07f70fdc89f2d3b SHA-1: d6c21a7a2e0c90680349cc1e3b8c5aac1a4bc781 SHA-256: a0acf718f3dba04b7bfb54d9889226a8d69244d3064bf866ee2478214912c75a
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, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This indicates a link farm or SEO poisoning technique designed to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

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=broil+king+signet+90+manual In PDF document text
    • http://files.alekstinapoodles.com/uploads/1/3/0/9/130969818/gaxiguzategegek_tekotepakiw_livetijebure_natufumu.pdfIn PDF document text
    • http://files.cthsurgery.com/uploads/1/3/1/3/131379828/nojumevolibe_runogazopuxex.pdfIn PDF document text
    • http://denupob.davidstraange.com/uploads/1/3/2/7/132740930/3978507.pdfIn PDF document text
    • http://files.chloescheel.com/uploads/1/3/0/8/130813042/5d7fab6f.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/1/0433/5324/3816/files/binary_to_decimal_converter_with_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/tupowidokoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3031/files/bhagavad_gita_jashi_ahe_tashi_in_marathi_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/bizhub_c558_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/ketobakutifirogiwufozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9317/1103/files/17985915318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/abdominal_cavity_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/ignou_ma_public_administration_disaster_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/93858229941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/guideship_in_bharathiar_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/xikaruse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/tonufireb.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_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 5416 bytes
SHA-256: edf6b7063db4c1b00f8b9b0d30739fa3fe0e9e0da78b0dfc1045e52a3bfc04c9
font_01_sfnt_off0000783c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783C 10600 bytes
SHA-256: 67a9704e3097ac10480e088b0e25668fd2aa8df8d7548cf080edf53a3e9b5b29

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