Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3b6c97bea9a5d3…

MALICIOUS

PDF

79.3 KB Created: 2020-08-09 00:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be56c0238bdde002e5a8be076a1f79e5 SHA-1: a9d1acc0b40e9851b395dcca4460f9a0d0163d26 SHA-256: fc3b6c97bea9a5d30b653055c209136290a0c9e2f2d7eeae6e75bd43f295261a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified links pointing to known malicious redirector infrastructure, specifically 'ttraff.ru'. Another critical heuristic noted a large PDF link farm, with the primary URL being 'cdn.shopify.com/s/files/1/0431/2812/7645/files/kukavakasatumikifusagi.pdf'. The document body contains garbled text but includes the suspicious URL and authoring application information.

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=bosque+muy+humedo+tropical+pdf In PDF document text
    • http://files.eastsidecoc.com/uploads/1/3/1/1/131164452/lozav.pdfIn PDF document text
    • http://files.newstages.ca/uploads/1/3/1/4/131437949/meliv-wizara-xusarijutibo.pdfIn PDF document text
    • http://tofubede.copperchiefstore.com/uploads/1/3/1/6/131637814/7af6c0245adef.pdfIn PDF document text
    • http://files.longclublambs.com/uploads/1/3/1/4/131437724/regadojiz-dulumiwiziso-tulimunem-laxiwolekepa.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/1/0431/2812/7645/files/kukavakasatumikifusagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/vonozixolusesikavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/raketedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/logapokepilakez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/77848043149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/voboxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/mifokolir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/boresejerug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/2020_calendar_template_editable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/beginning_fingerstyle_blues_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/bacterias_mesofilicas_aerobias.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 2

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_off0000fa78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA78 5672 bytes
SHA-256: fbbb60e5be699233056ad68d781fd5ea767383ae81a7589aefa3d0d737bdc2d7
font_01_sfnt_off00010da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA2 10076 bytes
SHA-256: fa74ca2d9c924b1cb6a9f431db13e117074d8ac7a5a3d7a2cc885bd7e95bc8ab

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