Malicious PDF — malware analysis report

Static analysis result for SHA-256 001672ce5edad1c2…

MALICIOUS

PDF

79.3 KB Created: 2021-03-04 02:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f43e6f66931e570fa604e1ca64831b71 SHA-1: 2a10e257502e0220c0e95a3215aca51d90dbe038 SHA-256: 001672ce5edad1c28e3780316b8f41e97c8d17cdf8b0961f6ba3b30a15e62340
134 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 numerous external URIs, with one pointing to a suspicious domain 'golowaki.ru' that is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the attack pattern of luring users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/strik?utm_term=computer+ki+mahiti+english+madhe PDF link annotation
    • https://cdn.sqhk.co/kidirugolo/hb6LIbf/moto_g_stylus_price_in_bangladesh.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/dexexetemitemodadaw.pdfIn PDF document text
    • http://senenetikoxikom.22web.org/83704775242.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/which_book_in_the_new_testament_was_written_first.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/wuxijuzugibasavip.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/iegiO56/ganazilupipulegateg.pdfIn PDF document text
    • http://kawapofog.iblogger.org/73496986158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403131/normal_603fe7370a82e.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/ggjcibT/28524796934.pdfIn PDF document text
    • https://cdn.sqhk.co/zegapoxasut/gp6GMfx/swot_analysis_methodology.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/how_to_write_a_personal_essay_for_college_admission.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/sujapepase.pdfIn PDF document text
    • http://litopojijerel.epizy.com/inclusive_design_guidelines_for_hci.pdfIn PDF document text
    • http://kixulal.rf.gd/payment_agreement_form_example.pdfIn PDF document text
    • http://xuxaxux.rf.gd/define_theoretical_framework_in_social_work.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/81390663189.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD7 5340 bytes
SHA-256: 6e2153aab9792f2aa4a51b27789ae35463f6f90868c37d0cc5c7baeeb4884ae5
font_01_sfnt_off00010cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD0 10332 bytes
SHA-256: db8293d7b9a692472f558de0481149c8756c8e400caa2e7a7fee7d82d561a915

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