Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4a2fd7edc00d7b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 11:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21925cd08bb92f5770a7644bb051ecea SHA-1: b55cd2a5a547414d068a42339e51dc1db6333b71 SHA-256: cb4a2fd7edc00d7bf05f7905769240c4c30f1eef7b542bed2650a0a2d2c5d187
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.ru/pify?keyword=ifrs+9+off+balance+sheet+items'. The document body, though partially corrupted, also contains this URL and references financial topics, suggesting a phishing lure. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm heuristic. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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=ifrs+9+off+balance+sheet+items In PDF document text
    • http://miluf.photosfrommyheart.net/uploads/1/3/0/9/130969746/4312653.pdfIn PDF document text
    • http://files.oceanheartscollide.com/uploads/1/3/1/4/131437552/xarogezegefadevexota.pdfIn PDF document text
    • http://files.d-ark.info/uploads/1/3/0/7/130740056/4899523.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/1/0439/7488/5534/files/lidumuwemaxejazikujoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/swot_matrix_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/faposu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/99808276010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/1187/4472/files/what_is_the_full_form_of_misfortune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/aqua_barbie_remix_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/58205000482.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 4

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_off000068c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 5356 bytes
SHA-256: 95748260d2f40aa98e5754d1001ae8e468701ac99e21599350ea6e9bf44cdd2e
font_01_sfnt_off00007ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC0 10288 bytes
SHA-256: a2a01750f9369fac270aff4c781706e834cdb658b7b0df88235d9634f1948f5c

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