Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4fea1f12c46f52…

MALICIOUS

PDF

91.7 KB Created: 2020-08-20 21:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b1e175707be9cb1b0b86cd30ba5dca5 SHA-1: 792c265144d8686a365c95dd29de6da7ac9f3463 SHA-256: ca4fea1f12c46f52c96dd5bca434312d07de6e8c5f9d7c32096dab3f828b0916
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result. The document body, though heavily obfuscated, contains the same URL and search query, indicating a lure to trick users into clicking the malicious link. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO poisoning or link farm tactics.

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=full+meaning+of+spreadsheet+in+computer In PDF document text
    • http://wezetewuw.thelakesrace.com/uploads/1/3/1/4/131482975/9677ff.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/1/0431/2127/9137/files/82364704681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2881/4746/files/98343186328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/livre_de_l_astronomie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/40366205266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9906/files/boundary_conditions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/30336193338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/banderole_freudentrnen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0718/4793/files/tri_fold_brochure_template_pages_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/holt_african_american_history_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/perovotadibirasakamif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/73024538248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/xepokogamorodututoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1250/5243/files/95801839417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/79955718896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/john_deere_14sb.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 1

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_off000128ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128CE 5524 bytes
SHA-256: d50b3b6b2003eaf363d16892449a577f0bf4aa876b799411cd33abca959c3dae
font_01_sfnt_off00013b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B67 11444 bytes
SHA-256: 59a837220837c3b7cb862657c00b60211163a11f58b1c201a4bc113fb3f1c268

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