Malicious PDF — malware analysis report

Static analysis result for SHA-256 35dcec8e69da7960…

MALICIOUS

PDF

79.2 KB Created: 2021-02-27 19:07:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 797a292c14d6c67bd00e3ae310c05b7e SHA-1: 7fcb7bd9f44985ebee06192109aba8852ef491d1 SHA-256: 35dcec8e69da7960cfca39f856b5aca4bb0cffc273dfc05bf5feb8fa31a67d35
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 'ponafet.ru/strik', which is likely the malicious payload delivery URL. The document body, though heavily obfuscated, suggests a lure related to 'how to reset inverter aircon'. No scripts were extracted, but the presence of an external URI and the malware classification strongly indicate a phishing attempt.

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://ponafet.ru/strik?utm_term=how+to+reset+inverter+aircon PDF link annotation
    • http://okclub.org/xidezokosewilepesazekonpnww.pdfIn PDF document text
    • http://xasefosixojoloj.iblogger.org/math_key_words_worksheet.pdfIn PDF document text
    • http://kolomata.ru/6001108506la1ys.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427526/normal_6014babd16a11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372702/normal_5ff4d54125d2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_601a53f6585a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_6026e1c064fd8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapopopabe.rf.gd/how_to_prepare_for_christmas_during_advent.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/spider_man_homecoming_hd_wallpaper_free.pdfIn PDF document text
    • http://bubotelerokuz.rf.gd/introduction_sample_of_accomplishment_report_in_mathematics.pdfIn PDF document text
    • http://fuxazulofonu.epizy.com/wuboge.pdfIn PDF document text
    • http://juruzimezez.rf.gd/free_crochet_pattern_for_waffle_stitch_dishcloth.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/db._update_sqlite_android.pdfIn PDF document text
    • http://wobalewir.epizy.com/what_is_limited_autonomy_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/where_can_i_buy_cheap_ribbon.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/11510863403.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/aoe_1_chong_hack.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_off0000fb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 4876 bytes
SHA-256: 9ce155af8320553f75a484fe87a0e3ac412d97c894fecc04346729a35126bf91
font_01_sfnt_off00010bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB7 10664 bytes
SHA-256: 71b0efddc33b1aea6fd91c823d18e341131a387240ec11135b94a4e22afba5e4

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