Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bc60bdf0034d24…

MALICIOUS

PDF

81.0 KB Created: 2021-04-17 09:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32b69ea3f6a1d3a72874289935fd8197 SHA-1: 65a5ba88851eed30852b8211250b272a064e790f SHA-256: c1bc60bdf0034d241364db1998dbdc14f52c48f79598164cc41070c91d064113
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to a 'Python machine learning full course'. The presence of multiple embedded URLs, some leading to potentially malicious domains, indicates an attempt to redirect the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/strik?utm_term=python+machine+learning+full+course
    • http://biomanix.best/36127554767zdqqb.pdf
    • http://cmbmarketing.agency/watobidfg2pd.pdf
    • http://gapewikegolunop.iblogger.org/estres_ansiedad_y_depresion.pdf
    • http://awpmode.com/bunn_slush_machine_parts_amazon9fo92.pdf
    • http://mumewozifuvab.iblogger.org/forster_fire_report.pdf
    • http://constructionhouse.info/72031532497qcsr1.pdf
    • http://hyipinvest.site/doctor_letterhead_template_free182jy.pdf
    • https://cdn.sqhk.co/regavebike/ggNjdhj/cheap_international_calls_from_ireland_landline.pdf
    • https://cdn.sqhk.co/jadepibake/Vgfidie/measuring_and_classifying_angles_worksheet.pdf
    • https://cdn.sqhk.co/towojutal/j6Sigjc/bagofuvedubebedifa.pdf
    • http://devuweza.scienceontheweb.net/61862370940.pdf
    • http://xoroketogejuxe.mywebcommunity.org/singer_esteem_ii_bobbin_case.pdf
    • http://yogait.space/kumukutikutitap_music_sheet_satbr3gss.pdf
    • http://natur-green.fun/hp_photosmart_7525_will_not_feed_paperrpeq6.pdf
    • http://italy50wow.pro/life_book_diary_2021b57gu.pdf
    • https://cdn.sqhk.co/dexasubu/giqS5jb/36213612648.pdf
    • https://cdn.sqhk.co/pinofizulag/ijigegh/moto_traffic_race_2_multiplayer_mod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://famekemij.epizy.com/92931465315.pdf
    • https://s3.amazonaws.com/sukedil/40934407690.pdf
    • https://s3.amazonaws.com/zuwimadaneb/98220116041.pdf
    • https://s3.amazonaws.com/rovikibixu/spelling_practice_worksheets_year_1.pdf
    • https://s3.amazonaws.com/lezopobigeza/bloody_6_crack.pdf
    • http://zesinule.rf.gd/94112451242.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_off0000fbdf.bin
0dc0a8ce8e7cfe25a43cc592ad3e0395d29abae55c2a33a1b141e23f63af4459
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 5400 bytes
font_01_sfnt_off00010e1b.bin
a1d5359d8b7e36a7eaa2d12be6e3631aed7cea0c3fecdbcbb42a40b97fbebf26
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1B 11280 bytes