Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a3153220232791…

MALICIOUS

PDF

64.6 KB Created: 2020-07-31 19:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23cf74b7cf4d416015f52126809c883d SHA-1: b690c6907d8a33cc5f29c752667b480335a283dd SHA-256: f3a315322023279186dbecbf3080700d38848c6cf1e162dc40720fb9a118c766
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=csgo+autoexec+commands', suggesting a lure related to gaming commands to entice clicks. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious content. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=csgo+autoexec+commands In PDF document text
    • http://files.suffah.in/uploads/1/3/1/3/131380547/1192257.pdfIn PDF document text
    • http://files.lakelore.com/uploads/1/3/2/6/132682899/31c57a5ae707d65.pdfIn PDF document text
    • http://files.farmingdaleadultdaycare.org/uploads/1/3/0/9/130969053/5a9971d8.pdfIn PDF document text
    • http://files.roc-secure.co.uk/uploads/1/3/0/8/130874543/8721347.pdfIn PDF document text
    • http://files.omanroadshow.com/uploads/1/3/0/7/130776182/da712092f62c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/rudukuxidemelatelelep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/xodotowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gibowutobarifokegibig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/81894299546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/popolok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/gevijibosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/xumadolulasoguwadiludafid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/49745131834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/12715545300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/pamapufabaxepejebomika.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB389 5056 bytes
SHA-256: 583385b2cd5cccf2f469358f25ffc293fba805d5b4f1dae422fee49555924271
font_01_sfnt_off0000c4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B0 10112 bytes
SHA-256: 0b91f7399770e4adb2588dd5ea80c0dfd82f4c876d7afa6b024633b599e8873d
font_02_sfnt_off0000e742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE742 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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