Malicious PDF — malware analysis report

Static analysis result for SHA-256 da61f8770287ffdb…

MALICIOUS

PDF

81.2 KB Created: 2021-04-01 15:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 350ef8e1950bd41130798162aa04c16f SHA-1: 80446274a4621a3660443b8b53954387ce8ad55c SHA-256: da61f8770287ffdb93c67ece59e0249a5e96821010886bdd0baa8bb758f43212
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially harmful websites, possibly to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/wix?keyword=answers+in+genesis+coloring+pages
    • https://segoluremu.weebly.com/uploads/1/3/2/7/132740478/6298a57.pdf
    • https://dunogijejuj.weebly.com/uploads/1/3/0/8/130813547/gemukotilutewafapa.pdf
    • http://fullstacket.online/nizabumanavedapu73px3.pdf
    • https://nodukuzizowuw.weebly.com/uploads/1/3/4/0/134000349/sagixut-mefibeduwur.pdf
    • https://bewevirat.weebly.com/uploads/1/3/1/4/131437926/6992876.pdf
    • https://kixivoveluvib.weebly.com/uploads/1/3/0/7/130775150/a766f9c110bb.pdf
    • http://mumiwimag.iblogger.org/jaxigukesigolute.pdf
    • https://cdn-cms.f-static.net/uploads/4453891/normal_604837fb68cf3.pdf
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/6e000.pdf
    • https://jetukuzimol.weebly.com/uploads/1/3/2/6/132695660/a7140ae2e2a0.pdf
    • http://brandframeb.com/toledano_materiales_dentaleszcces.pdf
    • http://questotzvezd.space/asce_41-13_download5kiz4.pdf
    • https://static.s123-cdn-static.com/uploads/4385614/normal_5ff8ef66d5b4a.pdf
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5fe636fa430a4.pdf
    • https://cdn-cms.f-static.net/uploads/4410986/normal_6016a7c34448c.pdf
    • https://dupomogorudo.weebly.com/uploads/1/3/4/5/134595760/913c589da.pdf
    • https://gejosubirimo.weebly.com/uploads/1/3/0/7/130776575/882d1c9930.pdf
    • http://vinnipoh.space/simijevuvibukisoforinkzfze.pdf
    • https://cdn-cms.f-static.net/uploads/4475406/normal_604d242935459.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://komadolosa.rf.gd/65395834188.pdf
    • http://dubaduvuk.rf.gd/51832917733.pdf
    • http://levewome.epizy.com/apc_backup_ups_350_battery.pdf
    • http://kuxatirimupuv.rf.gd/28168881993.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_off0000f1fa.bin
db10aff166ec4ba4e92f1b1829450b31ec8454b7b1ca2c58f6d22f9baab2127b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FA 4888 bytes
font_01_sfnt_off000102a0.bin
a95addac2d82358439bfa5986578480ad911ff0d14cf56eb07a0aa2913277a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102A0 11448 bytes
font_02_sfnt_off0001294c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1294C 4324 bytes

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