Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb9f5f5a3819665…

MALICIOUS

PDF

37.0 KB Created: 2020-08-17 12:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee75c352e51fb259babaf39feb5cf33c SHA-1: 097389e281379d267b3191e35fdfc3253aac1fae SHA-256: 9cb9f5f5a38196659b1edf1bcc79d8945f9186123a1a2184d34b4a872b12857f
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifying a link to ttraff.ru, a known malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF. The document body contains a URL that matches the identified redirector, further corroborating the malicious intent.

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=belageddu+yara+mukava+video+song In PDF document text
    • http://files.binhamvillagehall.com/uploads/1/3/0/8/130814066/jujagofumibozotu.pdfIn PDF document text
    • http://files.peneloperosecowley.com/uploads/1/3/2/6/132680998/e9c789.pdfIn PDF document text
    • http://files.epnonprofit.org/uploads/1/3/1/4/131483108/rukowixoxamunixejaxo.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/1/0447/8284/6109/files/chemistry_of_lanthanides_and_actinides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0440/files/8724362491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/81509556838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/je_me_debrouille_en_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/wunesufolute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/business_studies_grade_12_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/xunakobugumibowokemexig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3020/files/33845955637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/banofekanodazex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/vetoluvopoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/mudixujetuxekoxu.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_off00004a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3D 5420 bytes
SHA-256: d7ce61604475bdb2dfe7491b0c6d81e4dc07f0048b88cdb85c5ebeb4dd7dd5a3
font_01_sfnt_off00005c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9D 14048 bytes
SHA-256: 035f76757d87c2ae39cfac1baa1a3f7c187ac8f6a7dc4feaf906580e6969cb46

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