Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e58cb77c9ab9714…

MALICIOUS

PDF

77.1 KB Created: 2021-03-22 05:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b13a0058df79b1697dd4c8c56df3c88 SHA-1: 77a7076a31d5bdc5a608f6defc48bc9647b0fa48 SHA-256: 3e58cb77c9ab9714bbbfc5c7a9185bcc6bbe11ec9f51351d3eec39c8a6caaf2e
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, suggests a lure related to 'applied mathematical demography' and includes metadata from wkhtmltopdf, indicating it may have been generated from web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/award?keyword=applied+mathematical+demography+pdf
    • https://cdn.sqhk.co/nasanoroge/ajfhfjh/hidden_valley_ranch_packet_dip_recipe.pdf
    • https://cdn-cms.f-static.net/uploads/4424985/normal_6032ccef2dce7.pdf
    • http://vagijuderotogur.22web.org/duxesitanewutobifafi.pdf
    • https://cdn-cms.f-static.net/uploads/4529893/normal_6053344755053.pdf
    • https://cdn.sqhk.co/kuniremolu/igWigie/movie_theater_hollywood_md.pdf
    • https://cdn.sqhk.co/fosuruzu/RX0Tdui/vafefifotukowob.pdf
    • https://static.s123-cdn-static.com/uploads/4465548/normal_5fc5ea51bd399.pdf
    • https://cdn-cms.f-static.net/uploads/4448538/normal_602f83aeced4b.pdf
    • http://topitoxituzoju.iblogger.org/97434576734.pdf
    • http://tudejeseruleku.iblogger.org/antigenic_shift_and_drift.pdf
    • http://vumagiwupesaka.22web.org/17727997490.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://supidanerij.epizy.com/absent_letter_format_for_fever.pdf
    • http://ganukadokudu.epizy.com/38022481709.pdf
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_d5df8b1c635e4024940d3f96df5ab582.pdf?index=true
    • http://laletanegimiw.epizy.com/xigakelelugewobufu.pdf
    • http://vimobuzu.epizy.com/bhojpuri_desh_bhakti_song_2019.pdf
    • https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_e7961af574f64625be6bb3e0b8b4fb63.pdf?index=true
    • http://vepejiwuj.rf.gd/rudabilawenepafesixeve.pdf
    • http://dagilupakov.rf.gd/45759472652.pdf
    • https://03a45e23-20c9-4b13-8d21-50c2609e56df.filesusr.com/ugd/502f3d_4f14a76be9dc4b18b3f9be9591441281.pdf?index=true
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_5d1a47cd48324be8aed4b7b121e884e5.pdf?index=true
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_387b7e41ea514c5e9ad40489d30d67c2.pdf?index=true
    • http://tupiremere.epizy.com/pigilubejebinam.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_off0000e272.bin
2648f3aa844c08cf72d7f680298e8a4a53859292f90b406e5f9861b4750b71b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE272 5164 bytes
font_01_sfnt_off0000f407.bin
201ad67cf5634c2e19766d9e274ff8449cd5ad624d419cc76749255440af6be7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF407 10880 bytes
font_02_sfnt_off000118a5.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118A5 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.