Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad0081987ffa75c…

MALICIOUS

PDF

44.7 KB Created: 2020-08-23 01:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d67759b20ce9f327f588b62cd2aa8ec8 SHA-1: ae8a24c136073eb9cbb23c314751fcd4fe10d480 SHA-256: 5ad0081987ffa75ce30d483654c303f02a8a2974bfa286ecd1c7d44516700cd2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify, likely as part of a SEO-based lure for free downloads. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful content.

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.ru/pify?keyword=biological+psychology+rosenzweig+pdf In PDF document text
    • http://files.amandacimaglia.com/uploads/1/3/0/7/130740256/3875364.pdfIn PDF document text
    • http://files.wcapiary.com/uploads/1/3/2/6/132680822/2509139.pdfIn PDF document text
    • http://jiwiwuju.djsteffencoonan.com/uploads/1/3/1/3/131382406/a5c05be12428.pdfIn PDF document text
    • http://dapefa.utahstudentnurse.org/uploads/1/3/1/4/131438304/vezoziwofu-nobizobenofusu.pdfIn PDF document text
    • http://files.jcovercomersministries.net/uploads/1/3/1/4/131453276/damobudebateditejuwe.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/1/0454/9489/4744/files/maus_graphic_novel_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5512/7459/files/zajakepepolebubuwer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/23837352441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/98018101868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8179/2664/files/54270503993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/2nd_conditional_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/73680947680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/calculator_program_in_android_using_switch_case.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/11571252433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/potekevefizavikixapeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6079/files/mla_citation_format_website_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/intoxicacion_por_aflatoxinas_en_bovinos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/pioneer_vsx_820_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/interview_questions_on_control_system_and_answers.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F40 5708 bytes
SHA-256: 882d6e40698fc45e31ec81de7a226a9c25855943437d1a4a28381b104a692c99
font_01_sfnt_off000082ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 10192 bytes
SHA-256: 7e4a70582bfb6ed09f2c8d91caa63e61a3d64ae9f936cd8bc78886dc9e161773