Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9070dc1d7410dbe…

MALICIOUS

PDF

63.1 KB Created: 2020-08-14 03:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca9119666260d40b900cb781162328c2 SHA-1: 7e4a5b2cd2de439c6f061e099389a59d41cb7dd0 SHA-256: f9070dc1d7410dbebd1feed4a63c4960ed07f5d731d63f27a078bcca4fdefd97
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. This link, 'https://ttraff.ru/wb?keyword=bowen%20university%20post%20utme%20past%20questions%20pdf', likely serves as a lure to a phishing site or a malware download. The document also exhibits characteristics of a callback phishing lure, suggesting a social engineering attempt to trick the user into contacting a fraudulent entity. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, potentially for SEO manipulation or to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wb?keyword=bowen%20university%20post%20utme%20past%20questions%20pdf In PDF document text
    • http://bepax.christumcri.org/uploads/1/3/0/7/130740008/6232592.pdfIn PDF document text
    • http://files.rambunction.net/uploads/1/3/1/0/131069839/173081.pdfIn PDF document text
    • http://files.affordableweddingvideos.net/uploads/1/3/1/3/131380005/kivusiwuwolutadupofu.pdfIn PDF document text
    • http://files.interfaithutica.org/uploads/1/3/0/9/130969218/9093583.pdfIn PDF document text
    • http://bofezevo.sgionet.com/uploads/1/3/0/9/130969945/fetosu-doribef-moxezelipexawi.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/1/0429/1392/3228/files/zojinilorixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/wixurumiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/21682659338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/aws_certified_developer_associate_level_dumps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/peter_lynch_beating_the_street_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6903/6958/files/74489504921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/27625308739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/84964210040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/venenatis_guide_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/36800620477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/68862498424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/naruto_shippuden_episode_470.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8481 5584 bytes
SHA-256: 88cf64103bd017742d293ddf208965c4c5dcde45e8fce5bf15ace754b3176eb4
font_01_sfnt_off0000977a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977A 11680 bytes
SHA-256: 9f0666c3bb5b1a89b188cbcf10ecb01371531253e54030de0eba41ea5d856d0c
font_02_sfnt_off0000b2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2DD 10772 bytes
SHA-256: e8a52f9d2822b1f7b6bf4bc5d49f771f6399a49c81fef273a33dcd2959a3b79d
font_03_sfnt_off0000d7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DB 16488 bytes
SHA-256: 91c30074f85501cb5fe9baf33f35f843940bfa30be12b849312283e920dd8f5d

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