Malicious PDF — malware analysis report

Static analysis result for SHA-256 78017f1e0911a2f8…

MALICIOUS

PDF

34.4 KB Created: 2020-08-25 12:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8c50d43e7e8ead323e20477c23194e5 SHA-1: a2d1621b17615dd5dcf4be5ff7c1f8f8b19999f4 SHA-256: 78017f1e0911a2f8b2f3f7fc515597aa2402f877cc9e5747fdcdb11ebc7f2e2e
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, contains a similar URL, suggesting a lure to download or access further malicious content. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the social engineering aspect of this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=anjana+songs++now In PDF document text
    • http://files.littlesirestaurantandlounge.com/uploads/1/3/1/3/131383318/latakuvizowoje_dolasidab.pdfIn PDF document text
    • http://files.elkhornvalleyhrc.com/uploads/1/3/0/8/130874612/8397628.pdfIn PDF document text
    • http://files.oddityodysseys.com/uploads/1/3/1/4/131437604/18ecd497f2.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/1/0440/3275/3829/files/types_of_antenna_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/72063936968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2357/8774/files/13286374186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/kitchen_furniture_design_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/1639230457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/92918136496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/mysql_drop_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/zurubevowepibatawe.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_off0000496d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x496D 4880 bytes
SHA-256: 08e9da88af7be9dde68ce1eb7bc10d385653cdd42523177420a3aba3c3d726fa
font_01_sfnt_off00005a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A36 10332 bytes
SHA-256: 9f0d29fdfd9c9683e3a9ce635d7b4b02903a7dc9b7fcbbafbf560a78c80761a8

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