Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfc0408165fee7f…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 13:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4932a0ebba8cde4d90fd630cc9c37ea SHA-1: 3ec1280935d73b47cb6f415b02f166f2e1bc9774 SHA-256: 7dfc0408165fee7f4187ae257d871cbddbf58fa14dd0710055a8bd736754f348
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a seemingly benign PDF filename, suggesting a lure to download further content. The ML classifier strongly indicates maliciousness, and the presence of a redirector points towards a phishing or malware distribution attempt.

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=vlookup+vba+different+sheets In PDF document text
    • http://rurek.tsaiyicosmetic.com/uploads/1/3/1/8/131856177/sobas_sexazedokupaga_zisew.pdfIn PDF document text
    • http://files.elevationmotorsportsca.com/uploads/1/3/1/3/131380299/04aa4398.pdfIn PDF document text
    • http://zejiwino.bgcslc.org/uploads/1/3/1/4/131483334/8647314.pdfIn PDF document text
    • http://zepeb.remodelingmissionviejo.com/uploads/1/3/1/4/131406390/nixosapod.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/1/0448/0329/3346/files/accounting_journal_entries_ledger_and_trial_balance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/arabic_calligraphy_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6712/7446/files/jeminigotitadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/descriptive_paragraph_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/77651714070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/25958435687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/zejedawatitatidod.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 1

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_off00006d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9F 5356 bytes
SHA-256: 368cb0c415223e2250fd4f0a5e3b962b5ff89dbae7deffd81742f5e934b8ec7d
font_01_sfnt_off00007fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD2 10664 bytes
SHA-256: d692ae15379c5995abf9114f5cda5e2957d005d86bf7dcfed50548b611a53df1

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