Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc204cff0b825b54…

MALICIOUS

PDF

77.4 KB Created: 2021-02-23 04:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7013e6b8c52feb67100449aeb01a4629 SHA-1: e2edd03b322d730e7701b9a7d95a7009cd64b4cd SHA-256: dc204cff0b825b54115e53ba1ccedbe62c0fe89ad56727ca25e4d5f4b2063995
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing lure. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

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://bologen.ru/wix?keyword=hall+of+bulls+lascaux
    • http://ca-management.website/negative_personality_adjectives_list8cn8b.pdf
    • https://cdn-cms.f-static.net/uploads/4407998/normal_6025bbdc9f0e4.pdf
    • http://tophomework.space/pay_my_verizon_wireless_business_bill7m5eh.pdf
    • https://static.s123-cdn-static.com/uploads/4389384/normal_5fd055b649ba9.pdf
    • http://nakrutkavk.site/kasovagm6v1v.pdf
    • http://kieverts.xyz/erasmus_plus_2019_programme_guidew8xjg.pdf
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5ffcc1af549a4.pdf
    • http://goodik.fun/how_to_get_a_helicopter_in_gta_5_cheatnsbdu.pdf
    • http://naturebiolog.fun/94375799946mk04n.pdf
    • http://setlyb.online/destiny_child_fast_leveling_guidezn0qu.pdf
    • http://zoosalon.org/fe2_to_fe3_oxidation_potential5bsor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kijelopazekune/telegisomuripuxa.pdf
    • https://s3.amazonaws.com/jedobufudajewu/bahaddur_film_songs_kannada.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/9647933939.pdf
    • http://luzeparuzibez.rf.gd/listening_comprehension_worksheets_grade_2.pdf
    • http://xivubijorudi.epizy.com/taxodaruwubom.pdf
    • http://migepelulu.epizy.com/97706888996.pdf
    • http://dubomebivenu.epizy.com/67543735246.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_off0000f521.bin
d30342ce7a63bdaf34b7b17dccdf2c97d61751b8bf5f43f21d20aab9b60680c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF521 4948 bytes
font_01_sfnt_off00010611.bin
0048a42693a470cb9cff5d563df1d9e3ce3665782337cc873882bba192f3e0cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10611 10216 bytes

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