Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4412a801b38ef57…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 19:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4162fa4a130f616290586fd8a433c73 SHA-1: 7826b0ddd25be40581bdab61f811a642899b5901 SHA-256: e4412a801b38ef57163975b776c31442af483955a7ca5481c44ebbc5c99d970c
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.ru' which is flagged as a malicious redirector, disguised as a Google Chrome installer. The document body also contains this URL and numerous other links hosted on Shopify and other domains, forming a link farm. These elements strongly suggest a social engineering attack aimed at tricking users into downloading malware.

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=google+chrome+74+offline+installer In PDF document text
    • http://meperoro.vfpbellingham.org/uploads/1/3/1/4/131453574/8599978.pdfIn PDF document text
    • http://befilexep.difonet.com/uploads/1/3/0/7/130739415/7742683.pdfIn PDF document text
    • http://files.kushaklaw.com/uploads/1/3/0/9/130969446/xilalarijewosalitel.pdfIn PDF document text
    • http://firasi.ambrosiachilena.com/uploads/1/3/1/4/131407226/lomuwanurape.pdfIn PDF document text
    • http://wamobezib.asseroit.com/uploads/1/3/1/8/131871622/zilubikenus-sebonef-pumenowu.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/1/0435/0899/0116/files/91667957194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/rifurilemuraju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/ceftriaxona_ev_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/the_cost_of_discipleship_dietrich_bonhoeffer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/76796940975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/wasosokolurape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/ritixuzowaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/woxenetodemanalonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/11574651083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/viputidiludoziberitaxis.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 3

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_off0000668f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668F 5492 bytes
SHA-256: b9b134c56969d1a52e89022deda7959e547c5c7cd96a38d51ea2691dbfc20eed
font_01_sfnt_off00007929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7929 10312 bytes
SHA-256: abe56e086b2239b28fd415475523bb151bf085ae0ea2f5f432a340acff442a2d

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