Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d8b50b8f70f486…

MALICIOUS

PDF

80.2 KB Created: 2021-03-14 23:24:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8abbc20cc81a13023538743854cd424d SHA-1: a555d309d63551babdb1011a1c297b188a210148 SHA-256: b6d8b50b8f70f486a2147c6c842611d020b075ce71caf4397d052ed6b3caf040
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which is directly referenced in the heuristic findings. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'mapa zona hotelera cancun pdf', likely a pretext to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://jacksth.ru/award?keyword=mapa+zona+hotelera+cancun+pdf PDF link annotation
    • http://nebofimanigi.sportsontheweb.net/tizaxenududidoselul.pdfIn PDF document text
    • http://zapixexarepol.medianewsonline.com/78525506925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5ff3f84499a5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478127/normal_5ff7f0c78af78.pdfIn PDF document text
    • http://likelid.xyz/the_best_satisfying_slime_videos1ges3.pdfIn PDF document text
    • https://laxopewivizi.weebly.com/uploads/1/3/5/3/135394850/7085361.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405907/normal_5ff601df7b99f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_60305ae6a33c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5ff69b2e45525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412394/normal_601d36679810e.pdfIn PDF document text
    • http://ericksandoval.com/the_electric_kool-aid_acid_test_review7sllx.pdfIn PDF document text
    • http://onlinetyz.xyz/20963566267dk4xh.pdfIn PDF document text
    • http://tagoturuluro.medianewsonline.com/blasphemy_law_in_islam.pdfIn PDF document text
    • http://sysfix.ru/5040101922jsdel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5ff1baf0e579e.pdfIn PDF document text
    • https://weligolujevis.weebly.com/uploads/1/3/4/7/134748453/papitoxu.pdfIn PDF document text
    • http://larebalin.mypressonline.com/62140586914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_5ffccc4d72dc1.pdfIn PDF document text
    • http://razvivatel.blog/bbc_english_literary_companion_for_class_129ih1c.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/27563715965.pdfIn PDF document text
    • https://kekebamifibem.weebly.com/uploads/1/3/1/6/131606854/4052861.pdfIn PDF document text
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/0505c0d1e7e5655.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/takebemanijewok/14441054069.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/asus_rampage_iv_extreme_bios_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/are_kidde_smoke_detectors_interchangeable.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/91176972766.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/new_movies_2019_free_tamil.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_off0000f8b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B8 5120 bytes
SHA-256: 3d1a01f746bf6d2681940e5ce19ad7b0461262b6fab7325b02dc6c35d20bea45
font_01_sfnt_off00010a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A36 12028 bytes
SHA-256: 6e701296c6bc4031e8dcd36b5f7a3ecc279d0905324ab2ab53627a14f3ba413d

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