Malicious PDF — malware analysis report

Static analysis result for SHA-256 84dd7f26f375c633…

MALICIOUS

PDF

94.6 KB Created: 2021-03-26 03:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ed9ac0edea5b04ce38294f787489fe47 SHA-1: ca3df30ce01905f11df828ffc3a7b66d589246d4 SHA-256: 84dd7f26f375c6330e80b88cec4c6f79e187131f2265e8a9513ac9377e725429
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to 'ponafet.ru', which is highly suspicious. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=pioneer+mosfet+50wx4+car+stereo+wiring+diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417314/normal_60023dd845b3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469841/normal_5fd66106765de.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/hc7vjiu/93107447593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_5fdefb4e3c393.pdfIn PDF document text
    • https://cdn.sqhk.co/womelage/ZPhhEGj/rally_car_racing_crashes_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/zaronafi/pangdif/xelujukaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/mobubivifa/hSigR1z/learn_basic_spanish_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/puruwedisuma/8pibAYk/super_pang_2_game_online_play_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kiranagel/hjbdhaL/idle_farming_empire_crops_list.pdfIn PDF document text
    • http://rupazaduxil.mywebcommunity.org/37330509442.pdfIn PDF document text
    • https://cdn.sqhk.co/reparepoki/njhgf4F/puwazorutokosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_600a55e97fb43.pdfIn PDF document text
    • https://cdn.sqhk.co/korebuxaguz/75idss8/webetiwijo.pdfIn PDF document text
    • http://gepanukotex.getenjoyment.net/bissell_expert_proheat_essential_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xurinuwame/ihcGLm8/applock_pro_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/tibidimewako/IjjG8ja/50583561456.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/i8lidgg/lefejububemig.pdfIn PDF document text
    • https://cdn.sqhk.co/sunawopi/cggm2hg/hd_video_player_pro_apk_cracked.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/dutimajizowa/backup_android_phone_to_new_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/grade_2_math_worksheets_addition_regrouping.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/canal_walk_store_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/spenn_wallet_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/figumiwatejatitiguriten.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_off000132fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132FD 5824 bytes
SHA-256: 07999f69ce5b583c1300311e3f74da7eaa8320c44c3b2cae8fd3a993e9039dbf
font_01_sfnt_off000146e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146E2 11164 bytes
SHA-256: 950d66f2b897ff3b6374c392f4448c750a0fbee8a9b8b824021bf68b7a0c80a0

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