Malicious PDF — malware analysis report

Static analysis result for SHA-256 04fccca4c3ee616f…

MALICIOUS

PDF

70.3 KB Created: 2021-03-20 23:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 154874dffb4738d6e943a1f0b45e6d62 SHA-1: 95be5d68edd5daee8a730c04c7f86d9db9ff071a SHA-256: 04fccca4c3ee616f37e42de04e86b133dd40c0469a3c01b60fb1163218bb69d8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, disguised as a user manual. The presence of PDF_URI and EMBEDDED_URL heuristics indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/wix?keyword=airsep+newlife+elite+user+manual
    • http://guitar.su/231562887376ywbz.pdf
    • http://todayit.pro/2009_toyota_corolla_oil_filter_cap_wrenchupvua.pdf
    • http://lnstagramverifiedbadge-form.com/34488727908fgjho.pdf
    • http://kipivejezijab.iblogger.org/brother_in_arms_gameloft_apk.pdf
    • http://roserubusigiwij.mywebcommunity.org/buteogallus_meridionalis.pdf
    • http://mogabaketenis.iblogger.org/99101127100.pdf
    • http://juvizex.sportsontheweb.net/497791186.pdf
    • http://potoborotagivud.22web.org/glencoe_7th_grade_math_textbook.pdf
    • http://jotitojimo.mygamesonline.org/govavosirigo.pdf
    • http://ca-management.website/3286834789118047.pdf
    • https://cdn-cms.f-static.net/uploads/4415061/normal_603731a97c44f.pdf
    • http://toportt.online/85738314950p6pfc.pdf
    • https://cdn-cms.f-static.net/uploads/4451027/normal_603b44ea48812.pdf
    • http://jonipifenukiz.mygamesonline.org/vevupinogulasevonur.pdf
    • http://wumijodurixemi.22web.org/information_retrieval_conferences.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://basajusevubif.rf.gd/lugusenax.pdf
    • http://ziresam.rf.gd/eucalyptus_origins_sheets_review.pdf
    • http://sexikiti.epizy.com/cervicalgia_que_es.pdf
    • http://newemepakirid.myartsonline.com/fsi_spanish_basic_course.pdf
    • http://votixeju.onlinewebshop.net/acinetobacter_lwoffii.pdf
    • http://piwukoge.rf.gd/43474954390.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_off0000c94b.bin
c6f30bcd5b43667728d955ea4ef2ecee48f830588471eef9ee86b4383e455d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC94B 4900 bytes
font_01_sfnt_off0000d9d9.bin
a96eb224d80dfa7b7c4fb5355aacc923025f28764ea313680b9702dac2a90fd7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D9 9980 bytes
font_02_sfnt_off0000fc02.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC02 4324 bytes