Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2785a8b884f6a7e…

MALICIOUS

PDF

73.9 KB Created: 2021-02-13 12:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77a13dce9d778039384c0051eb4e3980 SHA-1: 7ed97b9302138398ce2becabda88483828386a00 SHA-256: f2785a8b884f6a7e01807c2851244ab910777e1f745f1e9552d5f8503e11e5b7
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document's content, though appearing to be a guide for day trading beginners, is a lure for an advance-fee scam. It contains an external URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=how+to+day+trade+for+beginners+pdf
    • https://static.s123-cdn-static.com/uploads/4408475/normal_5fdd3846a516f.pdf
    • https://cdn-cms.f-static.net/uploads/4403818/normal_60170b534e3fa.pdf
    • https://static.s123-cdn-static.com/uploads/4492246/normal_5fc76756b2cba.pdf
    • https://cdn-cms.f-static.net/uploads/4383322/normal_60237d486cce1.pdf
    • https://static.s123-cdn-static.com/uploads/4487665/normal_5fcc556e84861.pdf
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fc57bec153d6.pdf
    • https://static.s123-cdn-static.com/uploads/4403276/normal_5fc9041aefc9e.pdf
    • https://static.s123-cdn-static.com/uploads/4383915/normal_5ffa024f81859.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://noxudovo.rf.gd/rewabinebadar.pdf
    • http://pimokizogo.epizy.com/area_and_perimeter_of_odd_shapes_worksheets.pdf
    • http://dejiwupije.epizy.com/36442441470.pdf
    • http://tuzivapevof.epizy.com/jovejovawatibe.pdf
    • https://s3.amazonaws.com/tikoweravisixu/ikea_home_planner_tool.pdf
    • https://s3.amazonaws.com/zijivevip/asbestos_sheet_cost_in_madurai.pdf
    • https://s3.amazonaws.com/bupijila/wisconsin_badgercare_plus_hmo_program_guide.pdf
    • https://s3.amazonaws.com/furunumaroxun/minna_no_nihongo_answer_book.pdf
    • http://zepizokuxufo.rf.gd/jusonitawimibajud.pdf
    • https://s3.amazonaws.com/dutimajizowa/26819512060.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_off0000e37c.bin
566798b016ea836e9b6fa7e4736f27f7b406002c899153cc611e47d17fa4ab5c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE37C 5472 bytes
font_01_sfnt_off0000f63b.bin
a3a6a630e456cf44087176aefbd1098a99ea44cc6d2f77ea1d9fa302a25b82d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF63B 10616 bytes