Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8020e410d2ec72f…

MALICIOUS

PDF

77.8 KB Created: 2021-03-15 11:10:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c59d3f5e027c9f1f8f24d40f3ba47965 SHA-1: 8092e3850c35f83cf5e271a1bef3e213ee9b17a2 SHA-256: e8020e410d2ec72f63572c00ec4becbbc668dc36dff2b474203caeea34171bb0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, suggests a lure related to 'latest android pie release date', likely intended to trick the user into visiting the malicious URL for phishing or to download a secondary payload.

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://kuzutuzo.ru/123?utm_term=latest+android+pie+release+date
    • https://cdn-cms.f-static.net/uploads/4453342/normal_604b304f54512.pdf
    • http://gizaxeredemuni.22web.org/rang_barse_bhige_chunarwali_video_song.pdf
    • http://reliables.ru/what_size_battery_does_a_g-shock_watch_used25uu.pdf
    • https://joxefumisati.weebly.com/uploads/1/3/1/4/131406837/c187dc.pdf
    • https://wopadutizibum.weebly.com/uploads/1/3/4/3/134306931/lisata_takojof.pdf
    • https://cdn-cms.f-static.net/uploads/4407795/normal_5fd7971966bbd.pdf
    • http://stroiline74.ru/blender_2._78_macmb0g9.pdf
    • https://sesupukaxupasi.weebly.com/uploads/1/3/1/0/131070911/e114d5d6f6b03a.pdf
    • https://gipurafesab.weebly.com/uploads/1/3/1/6/131637457/fee5e5463.pdf
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/biwivejovedogel.pdf
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/2419943.pdf
    • http://helpcreditscore.info/harry_potter_books_vs_movies_timelinesxyrd.pdf
    • http://maletewidulebil.iblogger.org/bookkeeping_1_tutorial.pdf
    • http://geniusenglish.space/asking_answerable_questions_evidence_based_nursing3pmfw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jidagafinuxesu/how_to_cut_fat_while_strength_training.pdf
    • https://s3.amazonaws.com/sonutopexaramuf/last_reported_case_of_zika_in_maldives.pdf
    • http://ditajizuru.rf.gd/79329992855.pdf
    • https://s3.amazonaws.com/fadupazageraf/99952689112.pdf
    • http://gudukamu.rf.gd/android_studio_for_windows_old_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e588.bin
12f07e2c3058e9db278282ed0cd3b0d204035282f577f25ae39360261c997034
pdf-font-stream PDF embedded font (sfnt) at offset 0xE588 4684 bytes
font_01_sfnt_off0000f56c.bin
1fc1e6118f158cedb05f064f53e9c6e7758e87c10f631d2135abd2d971a1b832
pdf-font-stream PDF embedded font (sfnt) at offset 0xF56C 11240 bytes
font_02_sfnt_off00011be1.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE1 4324 bytes