Malicious PDF — malware analysis report

Static analysis result for SHA-256 77a0dea92ba4deea…

MALICIOUS

PDF

80.4 KB Created: 2021-04-04 19:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a460de84c1a38c32bcfdcf063044d96c SHA-1: e24622aa126ca641f5dca8275f8737a99eb1eb9c SHA-256: 77a0dea92ba4deeaaf26f597543afb24ec7bcceddb28014028a959beeb0690f7
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms or phishing campaigns. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL points to a domain associated with phishing, and the document body, though heavily obfuscated, suggests a lure related to driver's license tests.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://maypoin.ru/strik?utm_term=mississippi+drivers+license+test+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/mevutaxisut/fjc8RlS/lowawedutuzowowela.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/jd2REje/basketball_shoes_womens_size_8.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/iVgogeM/cash_book_format.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/gPjgxge/aquarium_fish_tank_acrylic_divider.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/ihiaBER/17877827234.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://uploads.strikinglycdn.com/files/43bc9b3e-183d-4885-8cb6-f89c8fe4b878/80620047601.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/zapokuvasepid.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/plane_simulator_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/dagoradorevuwedudofozimud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9806852f-cc4c-479a-a0e3-88770aefdb27/ver_pelicula_cuenta_conmigo_online_gratis.pdfIn PDF document text
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_200a1bb2561a4d5ba20c9ca9af484836.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujodibu/angular_6_form_control_disabled.pdfIn PDF document text
    • https://93a2b5bb-aecd-41dc-861f-07dcdefec443.filesusr.com/ugd/dee83c_7b489f46f6fc4cbea58ace23ff9875f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/banula/avg_antivirus_free_60_days_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/60320162468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f64fcea9-922c-4c0d-bd96-897749442acb/58274076409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6911e044-b15c-4cfc-a7f9-64c20214f098/lalimegokudamax.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_b20e321f22d54b80b6938a352308e798.pdf?index=trueIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 5232 bytes
SHA-256: 0b17fd733b716cc1ccd5b9564ebedcf4efad54d5b31b259e5ce5234fbf471e01
font_01_sfnt_off0001025c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025C 10280 bytes
SHA-256: 849974d2a89c3553aae39865041c607bef038e7783b9356de1d3c4bc323fbb4f
font_02_sfnt_off00012596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12596 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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