Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9afbe0cdd85cf1…

MALICIOUS

PDF

43.5 KB Created: 2020-08-18 17:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba26679c6129c56542a88229f34074e2 SHA-1: 5bedfaca89390371eec78cabe8e53ee3c5c940fe SHA-256: 4f9afbe0cdd85cf11190b88ed3a1884fa8295d9c9319d29ac3238a20c7d4dbeb
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though partially corrupted, contains text referencing a 'Brokerage house report on tata motors' and includes the malicious URL, suggesting a lure to a phishing or scam page. The ML classifier also strongly indicated maliciousness.

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=brokerage+house+report+on+tata+motors In PDF document text
    • http://files.dirtroadindustries.com/uploads/1/3/2/7/132740951/9756527.pdfIn PDF document text
    • http://buxupa.veradoverartist.com/uploads/1/3/1/3/131383726/31ba9301ac0.pdfIn PDF document text
    • http://rupaluv.oldsantafe.org/uploads/1/3/2/8/132816066/zadejowawitewureziru.pdfIn PDF document text
    • http://files.bridgeartsproject.com/uploads/1/3/2/3/132303219/11eb34858b87.pdfIn PDF document text
    • http://nepix.alazhartemple195.org/uploads/1/3/2/6/132681670/6798690.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/1/0428/9275/5103/files/zevokowekabajadorura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/32974855023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/wegiwimoxevonazuroweted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/900426822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/5804928011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/jimixiwemimoxejuxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/maserinijituwulude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/archive._org_games.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_off00006972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6972 5316 bytes
SHA-256: 616753c1d7860a146b65a148dd9a255793ed566f61bcb5535e9948f4b5f6f519
font_01_sfnt_off00007b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5F 10932 bytes
SHA-256: e9bc58378fc71ffa0b28507543680853a2e89d21a061fd2ce7d8ac2aef21abf1

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