Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad58182f9f4989d…

MALICIOUS

PDF

67.2 KB Created: 2021-03-29 17:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51fa5222b40ba64c1c71dfadc59686b3 SHA-1: 7e55800b0cdc0df24e95040dc34c6ac59adc42ae SHA-256: 6ad58182f9f4989db3eb600da242fa96524b50ae1340e47313e0711ff59eeabe
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/wix?keyword=american+girl+doll+horse+riding+outfit
    • http://samubed.iblogger.org/arjun_reddy_film_ringtones_free.pdf
    • https://cdn-cms.f-static.net/uploads/4377371/normal_60404b93d3abd.pdf
    • http://bezizomufulo.iblogger.org/farogivofabijatizozefe.pdf
    • https://muvisodujop.weebly.com/uploads/1/3/4/3/134358588/7894211.pdf
    • https://bamupenasod.weebly.com/uploads/1/3/1/4/131410012/sunomamiriwiseboka.pdf
    • https://jotesufuxave.weebly.com/uploads/1/3/1/4/131483421/f7b12a48d.pdf
    • https://cdn-cms.f-static.net/uploads/4382952/normal_6025dfbbbfdd9.pdf
    • http://faporivifavavep.22web.org/12692031046.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/potamotaz/91839312505.pdf
    • https://s3.amazonaws.com/faxaxos/parabody_350_strength_building_gear.pdf
    • http://wifofaxip.epizy.com/fujosoxex.pdf
    • https://uploads.strikinglycdn.com/files/9cc5d45c-6e88-46a6-832d-aed4f2d3421a/what_are_some_cute_puppy_names_for_a_girl.pdf
    • http://desiwafinu.epizy.com/abaddon_ii_regular_font.pdf
    • https://uploads.strikinglycdn.com/files/e8cd8a85-a7ba-4b25-8544-af80acfe1326/11222166794.pdf
    • https://uploads.strikinglycdn.com/files/d49dccdf-f801-46b8-8d3a-fdb2846f44b6/aqualink_rs6_remove_program.pdf
    • https://s3.amazonaws.com/mipizaju/78315295867.pdf
    • https://s3.amazonaws.com/vuzotisenixava/dobolazilanimewibamemof.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8d4.bin
d57638c3712f37eea3d1a1136378f4aa21b50e893d9540e960bd44dddf4da738
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D4 5424 bytes
font_01_sfnt_off0000db15.bin
40f25538c0aa81b71d2992ef057536933125aef1bce1a6ac984758630d917f6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB15 10792 bytes