Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b9c120dbd8ca5ab…

MALICIOUS

PDF

34.9 KB Created: 2020-08-14 21:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4489bb5870ea4612ce9c1731e32b2cbe SHA-1: 06c9d14093639056d7cc7d30f3037513b6b65d40 SHA-256: 8b9c120dbd8ca5ab85af0e1044a0a25fe59e46ada158bce95f8adeac16524356
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bus+stop+full+marathi+movie'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious domain.

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=bus+stop+full+marathi+movie In PDF document text
    • http://files.rmckendreeb.com/uploads/1/3/1/4/131453574/zupejarufo-fejezurukuvu-lofobadunafeba-morur.pdfIn PDF document text
    • http://wipaw.artbymelgraham.com/uploads/1/3/1/4/131438013/mubuvujevunenu.pdfIn PDF document text
    • http://files.brooklynprimary.school.nz/uploads/1/3/0/8/130874567/5261399.pdfIn PDF document text
    • http://files.sonorancyclesyuma.com/uploads/1/3/0/7/130739069/lenadelibivimuw.pdfIn PDF document text
    • http://xuvipep.tara-sarahna.com/uploads/1/3/2/7/132710714/8925287.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/1/0431/0705/7825/files/reasoning_ability_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/99692783013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/tetutidologetilaker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/96818132292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/baccarat_game_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/kabobobozelakaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4718/9670/files/kidadaledetaxiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/jagujonasedukita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3057/files/chicken_invaders_6_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2874/2298/files/college_physics_10th_edition_young.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 5

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_off00004ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB7 5248 bytes
SHA-256: 4778d3356e136aac268be1ba4a4602062aaa0d20f47dd783bd37cd3b703e9280
font_01_sfnt_off00005c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 10232 bytes
SHA-256: bf1d4b492d567fd174b71a79a975ecf42913673de928803498cdc9f299736da8

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