Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f4491bad54a2af…

MALICIOUS

PDF

81.3 KB Created: 2021-03-24 18:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749d3dd7d0de8b516a1d47aee3ff6fc2 SHA-1: 90ff76a2887f6c10bb222bded4c1bcf015277d0f SHA-256: d3f4491bad54a2afa96cdc3cfc745220da0a46e0da976e8f45da809fbb6d74c5
96 Risk Score

Malware Insights

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

The PDF file contains a URL that, when visited, appears to be a search result for 'pokemon omega ruby guide bulbapedia'. This URL is likely a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://midufefew.ru/wix?keyword=pokemon+omega+ruby+guide+bulbapedia
    • https://cdn-cms.f-static.net/uploads/4417314/normal_600add3447701.pdf
    • https://cdn.sqhk.co/sigidezok/ijUifVm/88511238657.pdf
    • https://cdn.sqhk.co/riwewazisara/hiTiejh/bacteriologia_medica_ana_maria_castro.pdf
    • https://cdn-cms.f-static.net/uploads/4422392/normal_60436534b47df.pdf
    • https://cdn-cms.f-static.net/uploads/4462992/normal_5fd62eae72996.pdf
    • http://smartcreditscore.info/nefoxedaloboliwowwsw8.pdf
    • http://rubka.space/wuwofevulitakamevenac0147.pdf
    • https://static.s123-cdn-static.com/uploads/4371004/normal_5fe59550371b7.pdf
    • https://cdn.sqhk.co/wukibezoso/RHltFJZ/kifezivebawu.pdf
    • https://cdn.sqhk.co/disumuneriva/jhafDhb/ashes_cricket_2019_game.pdf
    • http://idealsit.fun/melitta_caffeo_bistro_service_manualkeffi.pdf
    • https://cdn.sqhk.co/xupasutejos/eY0jbew/67100022609.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/towutoginadivu/setup_tp-link_tl-wdr4300_as_access_point.pdf
    • https://s3.amazonaws.com/jotizifime/concerning_hobbits_string_orchestra_sheet_music.pdf
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_05d61d9ccbb445bc99681e9c9f7a2431.pdf?index=true
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_c2339aef55f8498e9abf7d831f1c41b9.pdf?index=true
    • https://s3.amazonaws.com/jidagafinuxesu/call_of_duty_mobile_apk_apple.pdf
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_d0e5c55f96634c6e856103497b5ac8c9.pdf?index=true
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_254b554e727d4607b4b6c8893943cee5.pdf?index=true
    • 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_off0000f2bc.bin
cb84d4feb2848b1fcd4de984b0bfe8114eed88c74568b883a9a984fbf64ecb51
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BC 5212 bytes
font_01_sfnt_off00010454.bin
ceed95634b159b8237188cc4c10a7293e60e87bad38bbc902fe521594a7ac631
pdf-font-stream PDF embedded font (sfnt) at offset 0x10454 10584 bytes
font_02_sfnt_off0001285c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x1285C 4324 bytes