Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce532130f83f8a8a…

MALICIOUS

PDF

76.0 KB Created: 2021-02-16 23:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee2a947e745a52d5dd1ad59a3fdec1de SHA-1: eadf90b9fc367816f1f51d4bdf6b5ebc6753b36b SHA-256: ce532130f83f8a8a047b7db5510c2ef398454630921dcfff046fc1fb39bdc83b
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains keywords related to a guide, suggesting a lure to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=battle+brothers+guide+steam
    • https://cdn-cms.f-static.net/uploads/4444369/normal_602162d915cad.pdf
    • http://ranking-se.com/genie_pro_82_screw_drive_manualb60ij.pdf
    • http://jinitevuwug.iblogger.org/sezuxarunulupu.pdf
    • https://cdn-cms.f-static.net/uploads/4377938/normal_60188970d5353.pdf
    • http://jowopejev.22web.org/47521585391.pdf
    • http://letnesil.xyz/zegunok2d7wv.pdf
    • https://cdn-cms.f-static.net/uploads/4375210/normal_601be1f08a0b6.pdf
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5fd6589bdf561.pdf
    • https://cdn.sqhk.co/jujejorule/HMij9hc/verizon_auto_reply_text_android.pdf
    • https://cdn.sqhk.co/ratijojitud/R6x61qH/story_mode_gta_5_money_cheat_ps4.pdf
    • https://cdn.sqhk.co/vedanoderifu/FkhagiT/infinity_sign_copy_and_paste.pdf
    • http://habercigo.com/78568947050uvklp.pdf
    • https://cdn.sqhk.co/wekababu/qr1giia/real_moto_brasil_apk_mod_1._1._42.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://desibevazivoxan.rf.gd/basic_electronics_components_testing.pdf
    • http://wepebafefik.rf.gd/gumikibifevafukirugadudis.pdf
    • http://musubokem.rf.gd/amelia_bedelia_full_movie.pdf
    • http://xuxirifuv.rf.gd/bladeless_wind_turbine_ppt.pdf
    • https://s3.amazonaws.com/xifabilejilab/15175159801.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/zilofusilakuzokavonufasug.pdf
    • https://s3.amazonaws.com/pevarijidasalop/alliance_leveling_guide_warmane.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_off0000ecb1.bin
9f09958b690ff8cbf6983065ac3760d3ca9fdaa549b93150d89f6f70d9ff7d8b
pdf-font-stream PDF embedded font (sfnt) at offset 0xECB1 5428 bytes
font_01_sfnt_off0000fef6.bin
356854d8c9947ab6198baabee9d2c0902e5e6a11362b832396aea2e79e51928c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF6 10536 bytes