Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44aaac7b790f5c0…

MALICIOUS

PDF

74.0 KB Created: 2021-02-21 14:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 46025a6bba6e8de43fcb11b50bcd3ed4 SHA-1: 0ff053e403f499e52e3312563befd8e7e2b08bad SHA-256: f44aaac7b790f5c0d820a01aa290dea55c2ff8dca30306cb2adf402c7a676378
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/wix?keyword=badger+150+airbrush+kit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5ff5172dda240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_60251a4c1aed9.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/yggig99/drag_racing_rc_boats.pdfIn PDF document text
    • http://dodunagosukew.iblogger.org/uk_family_visit_invitation_letter_template.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/eiiq4gd/32528088877.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fecc39e4ec80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fdfdc41637ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5ff9789133039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402940/normal_6027102b4c529.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458837/normal_5ff387bc8a104.pdfIn PDF document text
    • http://liwugukikijosi.iblogger.org/old_canada_food_guide_plate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419637/normal_5fdb7a853c279.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369487/normal_5fe1950ac31aa.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/hUlyiel/m65_defender_field_coat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://memavopunon.rf.gd/30175621729.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/jamaican_bobsled_team_uniform.pdfIn PDF document text
    • http://bopamebedozupux.epizy.com/vlc_player_android_auto_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/86064333693.pdfIn PDF document text
    • http://linakagiwabofa.epizy.com/15509645128.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_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 5624 bytes
SHA-256: 9079d5e203175056c044cc69a8d383102fc701a9422489481a63296a63e6fb64
font_01_sfnt_off0000f33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33C 11208 bytes
SHA-256: eeb3339883569bf4cf1a66d7f722d6cd4432552c0ca067843417e7942ab8633f

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