Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cbe9d19dfb9a04…

MALICIOUS

PDF

82.9 KB Created: 2021-02-24 20:15:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b660000f331ee7df820020cafd274fe1 SHA-1: a62e4ff9e81e243092190e31edbd21d6ccbbc86e SHA-256: 93cbe9d19dfb9a044afdc4dc44bbdbfc085482803169ddeaeb4262b0b9662dc0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, suggesting it is used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=ccna+routing+and+switching+deluxe+study+guide+pdf PDF link annotation
    • https://cdn.sqhk.co/sujutowupolu/iOEibbh/xuvifesukif.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/eO6ifAC/54887876411.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/YugiTGw/gta_vice_city_mobile_cheats_android_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zanuduwedimu/atuieoo/begewujubuwadonozab.pdfIn PDF document text
    • http://gopefafapojawod.iblogger.org/4841564963.pdfIn PDF document text
    • https://cdn.sqhk.co/sudidoxa/2iaijst/the_world_of_magic_stats_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/HibVmgg/bubef.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/fonazuzixagizir/kijobobezaxokofiri.pdfIn PDF document text
    • http://xosatog.epizy.com/is_one_punch_man_season_2_on_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/agt_2019_finals_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/17308199164.pdfIn PDF document text
    • http://zoxokukazo.epizy.com/crafting_guide_the_forest.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/66562092379.pdfIn PDF document text
    • http://tirixerunifadi.rf.gd/vegan_recipes_easy_quick.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/52125046613.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/lagu_backseat_freestyle_remix.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/lasagne_with_butternut_squash_sheets_slimming_world.pdfIn PDF document text
    • http://getozareburi.rf.gd/58038617588.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_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 5584 bytes
SHA-256: b7f6fa43007e8e99710ce5ee9aa68483cfe1f07918bc249be595365791759cff
font_01_sfnt_off00010f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4D 15064 bytes
SHA-256: 5c802cd6a075b5911509880ac609a51ced9dca234792ad0b0cb9a0f19c720a8f

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