Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5f9e59531c89b8…

MALICIOUS

PDF

44.8 KB Created: 2020-08-04 05:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8adecb45b3d0591550a6a716210d0d1c SHA-1: 787a2db78a876e63ca23e2f65f62f70a9f6948e9 SHA-256: 8a5f9e59531c89b83d486b272d70125af0fb5440d410b5f0d886b05caf8f166f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=versos+intimos+augusto+dos+anjos+pdf`. This suggests the document's purpose is to trick users into visiting this malicious URL, likely leading to further compromise. No scripts were extracted, but the presence of numerous links points to a link farm or phishing attempt.

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=versos+intimos+augusto+dos+anjos+pdf In PDF document text
    • http://files.malianderson.com/uploads/1/3/0/7/130739112/guroriv_xotedosom_pisudiv_dixozagujufu.pdfIn PDF document text
    • http://files.cfandtg.com/uploads/1/3/1/4/131453657/52e2228.pdfIn PDF document text
    • http://files.capitalareaanesthesia.com/uploads/1/3/1/8/131872079/lagefixivinol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3197/5320/files/votegamavivipuwidibutiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/lesala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/balancing_redox_reactions_in_acidic_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5896/8229/files/95982299096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/73183534984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/98317746876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/77083210891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/gakixutuvuzolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/vefuvavibowukapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/foxit_editor_crack.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B1 5252 bytes
SHA-256: af230c9f202bde095467d950abf22448fccd3a736f7812de4474a28ead2b5393
font_01_sfnt_off00007379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7379 10836 bytes
SHA-256: f6fe3f499ac9d87b9282c9e61cc03bdf3aed01f59663095d224046953f7d05b3
font_02_sfnt_off000096b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.