Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f1d81894fecf97…

MALICIOUS

PDF

40.5 KB Created: 2020-08-15 12:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 828ad0c8a6ad39d6eab62014d84259a3 SHA-1: e5e91c475d0b7cad1f7594ee1f70e9c5a3476f56 SHA-256: c9f1d81894fecf970b540e851f0f1b6cb68b8b5ec8846d4b7592df70845d3d0a
134 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link. The embedded URL points to 'ttraff.ru', which is known for redirecting users to potentially harmful sites. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted, but the presence of a malicious link indicates a likely attempt to redirect users to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=soal+skb+guru+agama+islam+pdf In PDF document text
    • http://files.goldentreasureconsulting.co.uk/uploads/1/3/1/3/131383613/xuwadekatigivesafawa.pdfIn PDF document text
    • http://funozoz.missioncovenantyouth.org/uploads/1/3/1/4/131408738/mebalesusulenam.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/1/0435/2511/1972/files/42496898378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4886/7739/files/antonyms_synonyms_with_urdu_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/35638681759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/whirlpool_cabrio_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/lakavamimuraronuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/78327846553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7567/9896/files/fezewor.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_off00005fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBE 5668 bytes
SHA-256: 9774258e882e7015dbd501a696aa02b1e2c1fdb98e068f26431e9bc0ec8f2b22
font_01_sfnt_off000072e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E8 10168 bytes
SHA-256: 65daec75a8c0b68ff46a136cfeb4ebc3545830bd530217584fa1d2a872445dc8

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