Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f124d6b48201009…

MALICIOUS

PDF

80.5 KB Created: 2021-04-08 13:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b428a83e781f165f78d14e590530727 SHA-1: dd75e0c1b730acf2e16066c57b271d92dd581789 SHA-256: 3f124d6b48201009862434f7069d3e87689954f81f9caa0b37766c180b3e7ad6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains numerous external links, with a primary URL pointing to a domain associated with phishing and advance-fee scams. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's intent to trick users into believing they have won a prize or are due a parcel, requiring them to pay a fee for delivery. The ML classifier also flagged this PDF as highly malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/strik?utm_term=cfa+first+100
    • https://cdn-cms.f-static.net/uploads/4465392/normal_60385e755536c.pdf
    • https://cdn-cms.f-static.net/uploads/4405185/normal_601830fb22fbc.pdf
    • https://xewaxamuroz.weebly.com/uploads/1/3/4/5/134529724/wugutituvif.pdf
    • https://cdn.sqhk.co/masamiwe/icM7OZC/42262130010.pdf
    • https://cdn-cms.f-static.net/uploads/4489244/normal_60392bfa7b025.pdf
    • http://xurunoxawes.iblogger.org/82749921546.pdf
    • https://cdn.sqhk.co/worekoxe/ghdiaqn/best_file_manager_for_rooted_android_phone.pdf
    • https://cdn.sqhk.co/jozazixefuf/S8ZjfXO/62818222203.pdf
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/6321825.pdf
    • https://cdn-cms.f-static.net/uploads/4454546/normal_5fd0f2c10d092.pdf
    • https://fixemebipufuw.weebly.com/uploads/1/3/4/1/134131586/6874486.pdf
    • https://cdn-cms.f-static.net/uploads/4415052/normal_60677dba4fa60.pdf
    • https://cdn.sqhk.co/zalopubid/f7hchbz/91617779779.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0c3d51f6-ba1d-471e-be75-f6084f977c11/pojegabujoj.pdf
    • http://dawutanarav.epizy.com/kerala_university_bsc_botany_syllabus.pdf
    • http://vowoxemaxevajo.epizy.com/16715659317.pdf
    • http://fapuvonez.epizy.com/voicelive_play_electric_vs_gtx.pdf
    • http://zufonokimilije.epizy.com/wavelet_transform_book.pdf
    • https://uploads.strikinglycdn.com/files/a83edd2f-b964-4803-b395-47b8a149cf6e/metal_gear_solid_3_sorrow_boss_fight.pdf
    • http://zinogagagobuv.epizy.com/craftsman_chainsaw_carburetor_adjustment_screws.pdf
    • http://kotatemo.rf.gd/why_wont_my_vizio_sound_bar_turn_off.pdf
    • http://kuwoguki.epizy.com/47295757040.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_off0000fdec.bin
155d8812c27bbe647d340988f77748c9fc75afed3b3f55c93be329f81c270184		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 4828 bytes
font_01_sfnt_off00010e63.bin
87ef7185d0c8a25a499e42c87baf6b9081652110c5230904446b418aeecc4bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E63 11320 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.