Malicious PDF — malware analysis report

Static analysis result for SHA-256 b409982aa2ffcae8…

MALICIOUS

PDF

37.2 KB Created: 2020-08-08 08:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7832b05ad99f974129f6c023c1828a48 SHA-1: 82d98a88c48aad7329a6a7cd0a25f6c1bc1e7498 SHA-256: b409982aa2ffcae823607f6fa83ed411dfeccffc42c4d8ee72de1bce7ae91143
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=automobile+parts+catalogue+pdf', is designed to lure users by appearing as a legitimate catalogue. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The primary intent appears to be redirecting users to malicious infrastructure.

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=automobile+parts+catalogue+pdf In PDF document text
    • http://mizozoz.myangerundercontrol.net/uploads/1/3/1/0/131070152/pudibisad.pdfIn PDF document text
    • http://jomepelej.take5reviews.ca/uploads/1/3/0/9/130969332/luwumixomilafi.pdfIn PDF document text
    • http://files.insidechianticlassico.com/uploads/1/3/2/6/132681507/b2f76f4d.pdfIn PDF document text
    • http://files.perrychapel.com/uploads/1/3/1/4/131453247/5481672.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/1/0434/8405/3669/files/21137469110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/rilimuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/dexitifureposanubovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/veterinary_microbiology_and_microbial_disease_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/bowijefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3312/3221/files/45553382288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9090/3193/files/41172603401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/mejomebixafeluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/caucasian_chalk_circle_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/books_every_high_school_student_should_read_before_college.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 3

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_off00004b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B53 5604 bytes
SHA-256: 4762e404b638732e929dcc7115e4e881b9f1d9f8cc7d259757e9f9031cf07ab9
font_01_sfnt_off00005e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E43 13368 bytes
SHA-256: 64f35f3c5db1b4df7f7d434ddf0f850aea4810e3d2389f2ceef1428bff86b867

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