Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9df65bed7a42e2…

MALICIOUS

PDF

81.4 KB Created: 2021-03-31 08:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbd105b0cc7078e44f4b409119ab2b4d SHA-1: 4b9887b6c5ec1b5b5f2fad1fe8ce8fa4866c95e0 SHA-256: bd9df65bed7a42e28285b86b8939fc15fb294c3cc9e7fbdf156d1b2ad86ee6ea
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 phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to a product search, suggesting a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://kuzutuzo.ru/aws?utm_term=nintendo+wii+console+price+south+africa
    • https://cdn.sqhk.co/mixaluwekitu/dVFePP3/41833929567.pdf
    • https://cdn.sqhk.co/noxuluni/2iidnhe/34836828027.pdf
    • https://cdn.sqhk.co/bisuligiga/if3JWWh/ai_with_python_for_beginners.pdf
    • http://bozidik.22web.org/9856088168.pdf
    • https://cdn.sqhk.co/kejofuvata/egfjbgc/25536028954.pdf
    • https://cdn.sqhk.co/gepelarawazu/hahd3ih/basic_accounting_golden_rules.pdf
    • https://cdn.sqhk.co/gutinisiv/BOhi0Qw/satulerumexegemoma.pdf
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fe4022669908.pdf
    • https://cdn.sqhk.co/xubipoxeguza/vijhejj/sakedodunepewegavulivor.pdf
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5ffd539359e60.pdf
    • https://cdn.sqhk.co/samuxoruja/ie2XBas/sound_assistant_apk_android_6._0.pdf
    • https://cdn.sqhk.co/zafupusapun/TYQwktb/wovinaxeg.pdf
    • https://cdn-cms.f-static.net/uploads/4383574/normal_600f04c927072.pdf
    • https://cdn-cms.f-static.net/uploads/4383444/normal_604cd5121723b.pdf
    • https://cdn.sqhk.co/kibukumivu/p2MHYg9/ccnav6_chapter_9_exam_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4474720/normal_606301d321365.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/08c9cf16-75b3-46fa-addd-e88cd79dbf36/fimevidedilixu.pdf
    • http://dikewovob.epizy.com/manual_affinity_photo_ipad_espaol.pdf
    • http://xuvufajozurez.rf.gd/atharva_veda_english.pdf
    • https://s3.amazonaws.com/rezugekolaba/xitobaluvikopefuwuk.pdf
    • https://s3.amazonaws.com/gurafoga/vobotev.pdf
    • https://uploads.strikinglycdn.com/files/12966c96-cb09-4d52-915a-00157f91362c/zovakonowuzofuduvaxegarab.pdf
    • https://uploads.strikinglycdn.com/files/23e93d0b-a63c-455e-bbaf-4131bd1914d3/dazevafejezodaz.pdf
    • https://s3.amazonaws.com/tokudapele/gekol.pdf
    • http://gafelen.epizy.com/sigakuxadosojunebuviku.pdf
    • https://s3.amazonaws.com/zaxuledo/40597907926.pdf
    • https://s3.amazonaws.com/xisefowu/crayon_coloring_template.pdf
    • https://uploads.strikinglycdn.com/files/e1e01d51-5eef-469a-85a4-d68776da8bcf/kagofabubaj.pdf
    • https://uploads.strikinglycdn.com/files/489dc72b-6cd1-41f2-9a2d-4d8177b7e4c7/60364406289.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_off0000fec3.bin
3366662a81606e74598e398b33de4c6506021d6237f74ad290244b93c060866d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC3 5304 bytes
font_01_sfnt_off000110dd.bin
268cf1160121041b88d4ac06d1af1811350c4be1252c808beb1956c0e00b1ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110DD 11440 bytes

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