Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa502279d3a4dd5…

MALICIOUS

PDF

143.8 KB Created: 2020-08-27 16:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 874297096bb3d8897eedd594b5f7df34 SHA-1: f66d0015fa8a0fe85bbda82a3312958837d36a86 SHA-256: baa502279d3a4dd55627230e0ad4f0ea47fc0de81d1435f71fac08ebd0d4dba7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=history+of+medicine', is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=history+of+medicine In PDF document text
    • http://padurotut.incubator143.org/uploads/1/3/1/3/131379394/4068087.pdfIn PDF document text
    • http://files.helenefagerberg.com/uploads/1/3/1/4/131453062/pezezivedinutil.pdfIn PDF document text
    • http://newuzo.hanessiangroup.com/uploads/1/3/2/6/132683014/rorawopegujawutopad.pdfIn PDF document text
    • http://pesenub.abesoutfitters.com/uploads/1/3/0/8/130874435/1330620.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/1/0431/5355/5624/files/fiberom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/english_parts_of_speech_worksheets_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/puvakudozanofezumomufexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/ile_d_oleron_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/autonomic_nervous_system_mcqs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/battambang_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/vofopufuwakotetezagepud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7709/files/22194679363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/80966151658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/bekanedijojobubesebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/38710224128.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_off0001f74e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F74E 4988 bytes
SHA-256: 3722039918b61ee2988c2ea4ab89781a3b03e73a20b38643db74fb0739dd4bd1
font_01_sfnt_off0002082e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2082E 12664 bytes
SHA-256: 777150f38ab64a7cee4e7155fa6fdcef18f1c34e1742c84c0cb6cd5d87ed804c

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