Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9cc4499f3abeea…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 23:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f45a3deb13b2239743626c982d832dfe SHA-1: aec976a10caa53761d8af8bf39d24816a041a9f3 SHA-256: 5a9cc4499f3abeeadd439bd12c91c4cc5dbe5c275fcb16d2e06a982705a3a72a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body also contains the same malicious URL, suggesting an attempt to trick users into clicking it. The presence of a large number of PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to distribute malicious content.

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=android+button+look+like+link In PDF document text
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdfIn PDF document text
    • http://zekiseg.catholiclaporte.org/uploads/1/3/1/6/131637814/7855143.pdfIn PDF document text
    • http://files.communityspokes.com/uploads/1/3/0/8/130814462/9418cc02cd.pdfIn PDF document text
    • http://files.synergglass.com/uploads/1/3/1/0/131069869/fivajodasikadu_neposidox.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/1/0431/0279/7986/files/loruromarabedusorapuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/duzerowal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/naripezuzirilaligabegizoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/jivudaridobifalinasinilov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/11934451757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/voladitogetusadixonumurup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/lemasemidifofosukide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/technical_letter_writing.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_off00006fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 4624 bytes
SHA-256: f83896aac3f0941a0d5b667f7892b15214362c42d20df29bddfab4af566c9ffd
font_01_sfnt_off00007f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6E 10252 bytes
SHA-256: fce901147730fb1db6df1bb93b0a041f02f459f98e4aba9fe82ab70596865522

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