Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbed8a60e510c035…

MALICIOUS

PDF

76.8 KB Created: 2021-02-27 04:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 301278a7da279c0d95c9f788ba9f82bd SHA-1: 1ac8b9831e1adc160cdbf59d77be1f357d179eb6 SHA-256: bbed8a60e510c035c9392c05a08c349267d17ca8cc6bf3e4119b6baeda216dff
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=mackie+808m+mixer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475389/normal_5fdfd6660ea75.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/TgkQjfO/langrisser_mobile_rean.pdfIn PDF document text
    • https://gitumakiwu.weebly.com/uploads/1/3/1/4/131437138/xasomolozamuno.pdfIn PDF document text
    • https://cdn.sqhk.co/konarolikomu/3ghjcid/97616241137.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/iwBijAy/cold_war_beta_pc_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fe796059d3f8.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/zgcmYak/science_journalism_jobs_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_602e669e716b7.pdfIn PDF document text
    • https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/7542236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_6022b28a2e42c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368955/normal_602c8cf3813a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5fd17e1670c70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/problemas_en_mexico_politicos.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/11072806196.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/how_to_format_sd_card_mac_gopro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F2 4700 bytes
SHA-256: 138e9a6370c3499a532b7b421e7f8871a8be0f5fd44b38aeaa6df9bc23e70b0f
font_01_sfnt_off0000f2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 11012 bytes
SHA-256: a8d99e2674e2829831764f150f49e9c0119fbf2a7be29ba13beec58ee319499a
font_02_sfnt_off000117ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117ED 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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