Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f39eeb82239ea00…

MALICIOUS

PDF

73.0 KB Created: 2020-08-06 16:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d52c8da6a8d3b6eb6a812145cb5a9d2 SHA-1: 7e95e7ea521600433b46ae6f26f7a6d1b99465d4 SHA-256: 1f39eeb82239ea000d2912e455184b31ef5dd528ae59d28d7ddd876054d0d3b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link that points to ttraff.ru, which is flagged as malicious. The document body also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, likely for SEO manipulation or to obscure the malicious destination.

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=electronic+amplifier+circuits+theory+and+design+pdf In PDF document text
    • http://files.paloaltochineseschool.org/uploads/1/3/1/3/131380005/lekut.pdfIn PDF document text
    • http://files.amanda-ring.com/uploads/1/3/0/7/130775123/9065731.pdfIn PDF document text
    • http://files.themegaworldlifestyle.com/uploads/1/3/1/4/131482878/6cb2669a0c60c6.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/1/0432/5949/4555/files/xigasojogudojigatusoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0593/4759/files/wwww._dropbox_connect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/tetoziregeronujasubatizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/javascript_format_number_leading_zero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/jopereforo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/ffxi_leveling_guide_1-_99.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/73972108486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/nadumojison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/17393500512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2569/3845/files/ffxiv_legendary_nodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/58255967491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4672/5790/files/angularjs_6_interview_questions.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 4

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_off0000dcda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDA 5628 bytes
SHA-256: e2df6e2c88f17d1202d0eb989638a95104b168c51d08388c832b0022aa807cd7
font_01_sfnt_off0000efe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 11916 bytes
SHA-256: 3749335bdd3c56f33a47397dc0e9bd960af0ce423898bc74411468580f613d3b

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