Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf88d0aba6832a48…

MALICIOUS

PDF

44.6 KB Created: 2020-08-03 17:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dd2c1032fa4d7d88552386b427558a8 SHA-1: 0f2e0e0b073dc600110fa43365bff7769be9b6d6 SHA-256: cf88d0aba6832a48eadeb2840ea16060521d12f7f01a9d0f02a20ba8941f9049
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=public+finance+management+book+pdf'. This URL is presented within the document body, disguised as a link to a public finance management book. The PDF also contains a large number of external links, many hosted on shopify.com, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=public+finance+management+book+pdf In PDF document text
    • http://files.akashachamberlain.com/uploads/1/3/2/7/132740291/mibulasev-lebesijosij-zanuxoboxelepo-zifom.pdfIn PDF document text
    • http://files.maocorrea.com/uploads/1/3/1/4/131438823/6795867.pdfIn PDF document text
    • http://files.victoriamossremoval.com/uploads/1/3/0/7/130738875/241ed5155d24.pdfIn PDF document text
    • http://files.pack482glendora.com/uploads/1/3/1/6/131606630/gimadelumitezafam.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/1/0433/8037/5704/files/26369978761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/john_deere_la105_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/bradford_white_water_heater_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0813/files/duzite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5026/files/canon_rock_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/91447952733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/zaromeroxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/30060856968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/belewakaxenajama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/barafekifodekibuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1337/3084/files/vuzajap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4968/0032/files/kuniz.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_off00007124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7124 5408 bytes
SHA-256: cff55b72d9f5b1fc6ab0e093c454f79d72a2da934ef249d3e7735b25102c0970
font_01_sfnt_off00008380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8380 9816 bytes
SHA-256: b92db52a3aea6deed2c8159fac79c9cadb4ac2bdf60c6567696641d0d496a3af

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