Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c46b0f139ab78bb…

MALICIOUS

PDF

40.9 KB Created: 2020-08-12 07:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9703d60d875e06ccbce6f219731e1a07 SHA-1: 656a0a698520e2dd780ad617777bdb71dcd1988b SHA-256: 0c46b0f139ab78bb46319d5c567359f6e9daf77107efc3b256c064ec833f3a9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting a deliberate attempt to lure victims. The presence of numerous external PDF links further supports the SEO link farm heuristic, indicating a campaign to distribute malicious 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=operatoria+dental+barrancos+4+edicion+pdf In PDF document text
    • http://files.honmoto.com/uploads/1/3/0/7/130740200/9edcc.pdfIn PDF document text
    • http://files.ntangi.com/uploads/1/3/1/4/131406592/1858532.pdfIn PDF document text
    • http://files.warmnightcandles.com/uploads/1/3/0/7/130739404/aeff128085.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/1/0431/7259/3820/files/4389365592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/26884458832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/xotalekakosudoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/mavamavekopadoxabupusaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/42116446916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6806/files/pipe_strip_transcript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7271/files/80944500686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6482/5758/files/dutamusub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1103/8632/files/lalusikikabosidifara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/fufijusebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/12278825664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/zizamenuzagizamolixipuna.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 6

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_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 5404 bytes
SHA-256: 8895db48be43b4ea2b7420698d4aa1849afee3b13a9224c921b04ca1b2565d5e
font_01_sfnt_off00007432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7432 10264 bytes
SHA-256: f38bbb419f5be6a73da834b3db5e860fa642024e0e35b1ef9482c54fefba4e8f

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