Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3baf8b014d1dca2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 08:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b222764cb1122553a5d0487c1417978 SHA-1: 98f829fb9068efb5ee641fdd07ed51174635bfa2 SHA-256: f3baf8b014d1dca28be43c9c22411691b7cffba87014850318d0bb4c584b22a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.ru/pify?keyword=pdf+book+app+android' leads to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further supports this, noting a mass of external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search results or distribute malicious content through a large number of seemingly benign links. The document body itself is heavily obfuscated and contains the malicious redirector URL.

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=pdf+book+app+android In PDF document text
    • http://files.paulmetcalf.net/uploads/1/3/2/3/132303329/wodat.pdfIn PDF document text
    • http://files.heymarcomusic.com/uploads/1/3/0/8/130874474/siwoviku_lupumusaxemu.pdfIn PDF document text
    • http://files.maxiesknitwear.com/uploads/1/3/1/6/131637635/renefusi.pdfIn PDF document text
    • http://files.jasonkinneyband.com/uploads/1/3/1/4/131407080/29a71a23b1d.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/1/0428/7637/1110/files/bruskers_guitar_duo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0455/1590/files/zajavoperakuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6898/7294/files/crazyfrog_ring_tone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/45924000712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/you_are_using_safe_update_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/39379568259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/59071854409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/13480504425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7288/files/batabimijive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/77723510613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/custom_discord_invite_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/dowofolakanulonewaziz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 5028 bytes
SHA-256: 60a083df395758822e272674a5ba39bc9dac3be4ef3c792c4c78a964874854d3
font_01_sfnt_off00007591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7591 10256 bytes
SHA-256: 70fc084d6b4781cf2c3a1263fe8d688a9db18ba7e45ea4e509feca7b95afb48a

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