Malicious PDF — malware analysis report

Static analysis result for SHA-256 9167d2cde4557d4b…

MALICIOUS

PDF

81.3 KB Created: 2021-03-21 21:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc572f51c5b0609d759458052f52c6e SHA-1: 5a9769121bcab57d5341c334d5d52253241595e1 SHA-256: 9167d2cde4557d4bf68eaac27d9de6584f4ac614d7544ec8220785c3ec98ac75
136 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it uses an advance-fee scam lure, common in phishing campaigns. The embedded URL points to a suspicious domain, likely part of the phishing infrastructure. No scripts were extracted, but the PDF structure itself is designed to deceive the user into believing they are owed money or a parcel.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://seumenha.ru/wix?keyword=lawrence+kansas+police+arrests
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/1004259.pdf
    • https://static.s123-cdn-static.com/uploads/4374533/normal_5fef18d56a02d.pdf
    • https://static.s123-cdn-static.com/uploads/4499999/normal_5fe24dd8f1153.pdf
    • https://cdn.sqhk.co/toromerepowa/dijc1gj/44826628222.pdf
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/rirorana.pdf
    • https://static.s123-cdn-static.com/uploads/4412768/normal_5ff8c50039652.pdf
    • https://cdn-cms.f-static.net/uploads/4480382/normal_603ba4adc4476.pdf
    • https://static.s123-cdn-static.com/uploads/4379849/normal_60035b1593fa3.pdf
    • https://static.s123-cdn-static.com/uploads/4371808/normal_5fce9509d568a.pdf
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5fc65a32ec8e9.pdf
    • https://cdn-cms.f-static.net/uploads/4477864/normal_600a11d07cb78.pdf
    • https://cdn.sqhk.co/foropogajag/07hggdS/hardest_level_mario_maker_2.pdf
    • https://rezodipegizosif.weebly.com/uploads/1/3/1/6/131606434/ed4fb7b6a291.pdf
    • https://sudejewakigalo.weebly.com/uploads/1/3/4/0/134040490/gagaluw-siriwo.pdf
    • https://cdn.sqhk.co/fekesolip/gcrgcig/favupumasuzek.pdf
    • https://lejegibovijidup.weebly.com/uploads/1/3/1/4/131438293/2394928.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/baritexovopa/mobile_communication_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/sesafefanulokam/anorexia_nervosa_fact_sheet.pdf
    • https://s3.amazonaws.com/fukepez/atlas_anatomie_humaine_2018.pdf
    • https://s3.amazonaws.com/tuxenipup/musik_angklung_sunda.pdf
    • https://s3.amazonaws.com/perurulexi/d2_black_armory_forge_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f262.bin
455297e8bdb803743949fd7c2003d44fe54a57c4844ff67564d2e269b51e4d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 4812 bytes
font_01_sfnt_off000102d1.bin
feb490dda4b6d1f31673c555255c53931aef7d3fef5473a5288bb87d46c1da86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102D1 10968 bytes
font_02_sfnt_off00012831.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12831 4324 bytes

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