Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adb88cb5ec355ab…

MALICIOUS

PDF

76.1 KB Created: 2021-03-12 01:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0547bd62dfbb219712bd4643fcf9e045 SHA-1: 2b77b41a5184971d7fc125eb2af368584e16de32 SHA-256: 8adb88cb5ec355ab7d355ce91862e6bdb6cc755e749c19997b15be72ad29f30e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://jottigo.ru/wix?keyword=google+sites+movies+unblocked', which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'google sites movies unblocked', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=google+sites+movies+unblocked
    • https://cdn-cms.f-static.net/uploads/4493221/normal_604aa05150e83.pdf
    • https://static.s123-cdn-static.com/uploads/4501042/normal_6004941d72609.pdf
    • http://wupemokabate.scienceontheweb.net/82110873917.pdf
    • https://torimavilok.weebly.com/uploads/1/3/5/9/135984964/3d55f1.pdf
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fe44909b7187.pdf
    • https://lifefazat.weebly.com/uploads/1/3/4/7/134742259/871177.pdf
    • https://cdn-cms.f-static.net/uploads/4415962/normal_602619fdb3121.pdf
    • https://gepemizuwawufak.weebly.com/uploads/1/3/4/3/134335313/zabusipewedap.pdf
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/favuvikerun_vimozoxetebit.pdf
    • http://lazirog.mywebcommunity.org/46999314418.pdf
    • https://bazuxenulasiv.weebly.com/uploads/1/3/0/7/130740357/zaromenaki.pdf
    • https://cdn-cms.f-static.net/uploads/4493610/normal_6016a647e79de.pdf
    • https://gemujofu.weebly.com/uploads/1/3/4/3/134372819/domukugodogot_momigiri_netukatanenuben.pdf
    • https://cdn.sqhk.co/valujoper/brUznig/xurudasowesigapopanul.pdf
    • http://mejagudabukode.iblogger.org/pukofisupozapuxum.pdf
    • http://zubosoxi.22web.org/que_hace_un_lider_por_daniel_goleman.pdf
    • https://sifobidegi.weebly.com/uploads/1/3/0/8/130874382/7e6eec03.pdf
    • https://cdn.sqhk.co/wekaradukuve/hh7rjfK/prehistoria_definicion_en_ingles.pdf
    • http://korefubelexusiz.medianewsonline.com/skyrim_vortex_load_before_or_after.pdf
    • https://cdn.sqhk.co/wevosevob/rywjfgf/zofumowuzoxegiwanumem.pdf
    • https://cdn.sqhk.co/luxixumogez/TUatIgc/29485711226.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000ebc2.bin
d815979cf60db807881fbe999eea916df2a1dd4312aa918c427c7eae0987208a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC2 5248 bytes
font_01_sfnt_off0000fda2.bin
9943d5bc3cd0de657db6ad1450d24b768040f79a0290935d9a01d4cf4123de07
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA2 10980 bytes