Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7b2121fbad0ebb…

MALICIOUS

PDF

76.7 KB Created: 2021-03-29 04:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7a88e495289eedc39830a57720cde3d SHA-1: b2629420d535c83d9116dba5dfbb8f26c6cb3951 SHA-256: eb7b2121fbad0ebbbd5cb2b4136b59b04b9ffdb6d167353a6e317edbcf7565e3
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'generator service schedule', indicating a social engineering attempt to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=onan+generator+service+schedule
    • http://ezfix.asia/arab_times_onlinecw3c5.pdf
    • https://noromilo.weebly.com/uploads/1/3/4/5/134587763/bopoxaro-tedagajo.pdf
    • https://static.s123-cdn-static.com/uploads/4464852/normal_6004c527948d5.pdf
    • https://cdn-cms.f-static.net/uploads/4487409/normal_60338ef242ec2.pdf
    • http://alcozerox.com/12268391025v249a.pdf
    • http://chelamela.org/watch_let_it_shine_online_freex9rmx.pdf
    • http://fafekaju.22web.org/10278180352.pdf
    • http://nuveclovet.xyz/beats_studio_wireless_2_earpadsms5t9.pdf
    • https://sajofagexureleb.weebly.com/uploads/1/3/4/6/134652103/5086992.pdf
    • http://uscreditreport.info/nenorexapitudipodaftgnpg.pdf
    • https://cdn-cms.f-static.net/uploads/4369318/normal_60414f346ee65.pdf
    • http://temilops.xyz/864843353030kp5g.pdf
    • https://cdn-cms.f-static.net/uploads/4485435/normal_601a015f1b4f5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kafopazam.epizy.com/64353643361.pdf
    • http://vabenudavagosiv.epizy.com/85934657934.pdf
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_f64f2e50471f4980a15750c6fdc6e134.pdf?index=true
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_5b419dd724ea4c39b5a19f0d6c2275a3.pdf?index=true
    • https://aa700e4b-9450-4a85-8b7e-8c92ffe47626.filesusr.com/ugd/de972d_0745259a431946e7b8ccac51d312c7fc.pdf?index=true
    • http://zopopujeji.rf.gd/yugioh_card_template_gimp.pdf
    • http://lepigofogirevog.epizy.com/zefag.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_off0000ee70.bin
598951493b4e49ccb6a3b32f644d2b237322b9b7c65a371b079435e42ac8570c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE70 5288 bytes
font_01_sfnt_off0001006d.bin
e216b24bde5e7b38808a353db4307e92b06460fc1cdee3abce340e9c761d3323
pdf-font-stream PDF embedded font (sfnt) at offset 0x1006D 11020 bytes