Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf921ee10228cfab…

MALICIOUS

PDF

73.6 KB Created: 2020-12-24 11:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b67345a1e09d150a4211fc1a9a03c80f SHA-1: 26d959d9dbff618663e10dc52d664a7b0b337334 SHA-256: bf921ee10228cfab9ef1eb18bde81fe2c09ed620677d9a4b3fc8460b9e4106a8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a site offering a 'free squad survival battleground apk'. This strongly suggests a phishing or social engineering attack aimed at tricking users into downloading potentially malicious software. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or trojan distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=free+squad+survival+battleground+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492573/normal_5fd7cf9193bc9.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/R2rzt0n/vagivukagewoliwot.pdfIn PDF document text
    • https://cdn.sqhk.co/niturunajik/gcifvge/79313600393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5fa3e3dce42ab.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/igihgVk/92145000019.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/hgaA39Z/52144435185.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421778/normal_5fdd36aade003.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/07c81fab-aa8b-4ef6-915f-42b96569112a/popitiragog.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/kedifetibotiwafid.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/cross_check_y_reportar_que_significa.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/countertop_laminate_sheets_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/40697999110.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/latest_sports_news_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a1e47a-199e-4f96-9746-18c486137852/wojopoditapamikamatopi.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF6 5356 bytes
SHA-256: 04aeb7952538d8c454ae4dc1bc1ecd1ba6008ee4be2bf5c511fd14c4cefac5ec
font_01_sfnt_off0000d21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21F 7948 bytes
SHA-256: 5c570fb0e56f2d332b9be4ef3b6ec5e2f71fa7b9299c537603fac2b5eb7b8f12
font_02_sfnt_off0000e80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80A 10224 bytes
SHA-256: 407ab8115a0f4e7126f4ae474baf1b54b2af91490ef67544752a37bb15e3bb17
font_03_sfnt_off00010ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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