Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c793134b68a676…

MALICIOUS

PDF

46.6 KB Created: 2020-08-15 05:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 221c4126a3ac8f3c25cf297e3ffe44c8 SHA-1: a64000727fcfaa93f965d432bdaeffdb676de54c SHA-256: 73c793134b68a6763ccf80a69288040a1d7abd8ddefecc908e413712c4cec301
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple embedded links designed to redirect users to malicious infrastructure, specifically identified as a link farm and redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=finding+percentages+worksheet+tes, which is used to disguise the malicious intent. The document's structure and embedded links suggest it is part of a phishing campaign aiming to trick users into downloading further 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=finding+percentages+worksheet+tes In PDF document text
    • http://pesitugu.raagnew.com/uploads/1/3/0/7/130776321/61f52e97ecc9d32.pdfIn PDF document text
    • http://luxugame.tranbcreative.com/uploads/1/3/1/3/131383544/6348880.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/1/0432/5310/4790/files/checkbox_in_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/basic_agility_ladder_drills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/jebikalufireritef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/5310166302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/android_7._1_software_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9456/1188/files/xasetulemimafosiziludigom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/46033026583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/78566730746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/convert_to_word_acrobat_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/bawugusugijixido.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 2

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_off000077fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 5416 bytes
SHA-256: 778bc5de6c2de5aa1e8b8d044a8003651ef0a851b6ddcd694044b16a28761271
font_01_sfnt_off00008a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A72 10192 bytes
SHA-256: 8c3576e29d7dc7c380f2d3a80e72c1d16b47942bedae6d20e0904373ba8135e3

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