Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca30e36e7153c20…

MALICIOUS

PDF

51.1 KB Created: 2020-08-23 09:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62c7c845e5c56c8a132ec553e042d861 SHA-1: 2232a71fba1d13d12ec34f19c90321a30b1ff966 SHA-256: 5ca30e36e7153c2030df1a9adac054fe2dd269d954c0144c0c71ef03aa92826d
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) disguised as a list of Chrome OS Android apps. The heuristic firings indicate this is a link farm designed to lead users to malicious content, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with T1059.007 (JavaScript) due to the common use of JavaScript within PDF link actions.

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=chrome+os+android+apps+list In PDF document text
    • http://files.landofmadmen.com/uploads/1/3/1/3/131397927/nexixofumekata.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/1/0434/0704/8860/files/86200937282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/31905696273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/93173685269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/png_borders_and_frames_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0124/0985/files/54017227890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6551/files/92551957881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/adobe_photoshop_cs5_1_brushes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8507/8423/files/beowulf_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/98554379275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1576/4128/files/13752412871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/renuxenowefuvog.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_off00008ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA1 5104 bytes
SHA-256: 6f7de7bbdfb98d93c5d2b94fbff2eb32716930d93f901f052802e1a993bae831
font_01_sfnt_off00009dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCB 9944 bytes
SHA-256: 8a2b32be770d116122ab2c19066537e527718ad06d1cc01013a394ca155913c3

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