Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d97ae93ae40d7b6…

MALICIOUS

PDF

71.1 KB Created: 2021-04-02 09:34:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec0ca4ac7d918e89a6855d4d76f3bbc6 SHA-1: d290d2001c83c1b36130524afe7997e931eee875 SHA-256: 4d97ae93ae40d7b6bfbcc326903b35d13cd52c30cc1d869bd6be773f9a13232b
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, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://soxebez.ru/123?utm_term=bonniers+franska+grammatik+pdf', which is likely a phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to trick the user into visiting a malicious site or downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/123?utm_term=bonniers+franska+grammatik+pdf
    • http://puzotupisebi.66ghz.com/45353335341.pdf
    • http://pifedalune.medianewsonline.com/96527068129.pdf
    • http://iranomics.com/burger_king_2_for_10_menublrmm.pdf
    • http://ottics.ru/kogigoxelopobemiwotubo6ln1v.pdf
    • http://lebedugipul.mywebcommunity.org/45419025736.pdf
    • http://itprod.space/jabizalikabapzojl.pdf
    • http://zitosobuzozuz.22web.org/android_studio_adb_shell_root.pdf
    • http://geleostone.online/girl_with_the_dragon_tattoo_trilogy_moviesy720q.pdf
    • http://cleanup-sale.site/72656148266xpec5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fifomivosa.rf.gd/34250382705.pdf
    • https://s3.amazonaws.com/penale/letts_ks2_success_revision_guide_english.pdf
    • https://s3.amazonaws.com/sirilagewuga/blank_handwriting_worksheets_for_1st_grade.pdf
    • https://s3.amazonaws.com/sasufufa/fubizefomikejug.pdf
    • https://s3.amazonaws.com/zodawanuror/81641302589.pdf
    • https://s3.amazonaws.com/bojafazes/64488288472.pdf
    • https://s3.amazonaws.com/ropuba/lubebozewifof.pdf
    • http://nujugeteteda.myartsonline.com/kanipojetiziru.pdf
    • http://nivuzujanux.myartsonline.com/security_problems_in_the_tcp_ip_protocol_suite_ppt.pdf
    • https://s3.amazonaws.com/dogevazapiwediw/35674765304.pdf
    • https://s3.amazonaws.com/woxotopapozokev/chameleon_run_apk_full.pdf
    • https://s3.amazonaws.com/zesotat/android_snackbar_layout_example.pdf
    • https://s3.amazonaws.com/ginutu/book_report_format_5th_grade.pdf
    • https://s3.amazonaws.com/juzinaramip/16841626012.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_off0000d1de.bin
3a51882fedf6601dbdafd596b706beff928de1f904041cdc225ae002d210cd5d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DE 5440 bytes
font_01_sfnt_off0000e451.bin
befae17fadb6ac77b3ce34e00918a7d6702fac8444be6cbac89a64a76084243e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 13276 bytes