Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d3f3ab2b3935e4…

MALICIOUS

PDF

92.1 KB Created: 2021-03-24 01:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9d613c01b6ad2faa5324ff4bce9b6052 SHA-1: 60a012cb7f2f088ac06ea2fd24b1ae9b4e099479 SHA-256: a2d3f3ab2b3935e469bd1c97994011a1c4e8525ec40f683c07eaa7763b8e77fc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'dugedepap.ru', which is likely part of a phishing or scam campaign related to 'free obamacare'. The document body, though heavily obfuscated, contains text fragments that align with this lure. No scripts were extracted, but the presence of the malicious URL and the overall detection strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=how+do+you+qualify+for+free+obamacare PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384026/normal_601d938770039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_6050e183c0e0b.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/3JUx3jg/zopojozirewitozavujatapi.pdfIn PDF document text
    • https://cdn.sqhk.co/tevimuwijile/gLjinhd/download_3d_8_ball_pool_game_for_pc.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/why_hp_ink_so_expensiveinixk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449177/normal_6018d791d38cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485440/normal_5feb82b588b37.pdfIn PDF document text
    • http://pokypka.xyz/the_elephant_man_bradley_coopersm1z0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482870/normal_5fcce39963bb6.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/Iihih2a/trading_neon_black_scooter_adopt_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426679/normal_604995b78b7dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409627/normal_600ebf8708276.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/XtWUjdH/costume_store_chicago_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391302/normal_5fc733ad923e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_60125154648c4.pdfIn PDF document text
    • http://fridgeservice.ru/xiwebaliwufopujazuzenxvta9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/competitive_landscape_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/how_to_address_international_mail_to_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/dragon_nest_main_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/persepolis_free_online_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/vermont_casting_encore_price.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D1 5408 bytes
SHA-256: 44e4dd6e8727ee8f0f2bb46dac5089f5d556d5dd9106d5c734b914a0a4f7ee27
font_01_sfnt_off00013c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C38 11420 bytes
SHA-256: a4df171f8dcbe586396cca0b966104a0d9a4a88789fb647c77ae137e1d72a427

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