Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a142581f1072e13…

MALICIOUS

PDF

80.1 KB Created: 2021-01-05 20:21:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e745b81c41c9ba7ac76538d7b0ed90ef SHA-1: b4aa76628752c935c0cc927ee5f2b7ead5d30a48 SHA-256: 6a142581f1072e13ac76b9dd6e1d15325e061e3b6d285e77c67c102ad754e31c
214 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to a 'Bose speaker amazon quiz answers'. The presence of numerous external links, many pointing to Strikingly, suggests a link farm or SEO manipulation tactic to distribute malicious content. The ClamAV detection and ML classifier further confirm its malicious nature, likely as a phishing or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/aws?utm_term=bose+speaker+amazon+quiz+answers In PDF document text
    • https://cdn.sqhk.co/faxiwapa/igejgjf/vintage_world_map_framed_picture.pdfIn PDF document text
    • https://tinuxitimo.weebly.com/uploads/1/3/4/7/134748051/502c4ba1d1998a9.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/lidgehe/new_army_pt_test_standards_by_age.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/nudedinera_gelon.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/0616c85c516e6d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/73c744b5-8241-49a1-aab8-fcdca5b71f4b/fuiste_tu_ricardo_arjona_mp3_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d3691b2-4efc-4945-9ef8-7e1bf9171403/lsu_alabama_stream.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28580fe9-da1d-4f61-8529-3e41e8935ed3/h57h_am2_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9c3fec-ddd3-4136-8433-2a44f8ed2fe0/kexulomogolumawibepejidi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dffef60b-392a-4c6f-bafd-7bf7fbc7e930/zoxinokopilaxubenetupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/011e9dcf-f531-4204-abff-cb5e548b4f92/idle_stickman_apk_mod_unlimited_money.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702740f2-d4d8-4640-8487-9028e6f0ff50/79398243922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a5bfbd4-7e92-47a4-97e8-1aea29a9a570/31051049096.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 5312 bytes
SHA-256: 5d6a894fd91d315357af5a86ce1907f40998b377a3e1b3bcacb3576bd3b6ce8e
font_01_sfnt_off0000f65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65E 11476 bytes
SHA-256: 5d4c172f9f457dc7e767625c263399042eb88649b3f73e4489ae390026943436
font_02_sfnt_off00011db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB8 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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