Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2aef2a149e62486…

MALICIOUS

PDF

42.3 KB Created: 2020-07-30 06:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d03a118c84e9a89147a530193f109ac8 SHA-1: 0764cb3b10311ecb110c6dad465e549642d768ab SHA-256: b2aef2a149e62486a48566a6eaabee4809e77e4fdb488ad3b15f2b08b4422315
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically linking to 'ttraff.ru' which is flagged as malicious. The document body, though heavily obfuscated, suggests a file conversion theme ('Chuy

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chuy%25E1%25BB%2583n+t%25E1%25BB%25AB+jpg+sang+pdf In PDF document text
    • http://files.barefootgardens.org/uploads/1/3/1/0/131070651/duvubuzanol.pdfIn PDF document text
    • http://files.madeincommon.com/uploads/1/3/1/4/131453065/puziwobem.pdfIn PDF document text
    • http://files.farthingstewart.com/uploads/1/3/1/3/131379759/fulevemepibu.pdfIn PDF document text
    • http://files.rudetudors.com/uploads/1/3/1/6/131606011/fbc6569842d12.pdfIn PDF document text
    • http://files.intuitivetouchworld.com/uploads/1/3/0/7/130739234/fa51d4ed5df2.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/1/0435/7862/2111/files/73573256032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/24259933629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/59261250885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/nalugeturup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/puzatanowurutewezar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/gegilabukuluzepuxilela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/31624948657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/30874279585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/77660803354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8070/2366/files/80235621044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/waladako.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 4

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_off000065b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 5348 bytes
SHA-256: 9f5e553b495e9defa0a6a4f7c0b562de3aef75f358830df82cb58dc2a46f19c1
font_01_sfnt_off000077e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E3 10288 bytes
SHA-256: 591e6e6e3ce3fb733e9e0b6c1f0374061bb9f864c39dc4f06c42b25b4242dd1b

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