Malicious PDF — malware analysis report

Static analysis result for SHA-256 018c26981db67703…

MALICIOUS

PDF

77.1 KB Created: 2021-03-10 23:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9799e5be86a6562764c13d597723fd26 SHA-1: ae398d8badd11e1bb1855dba40b4ef2afd73af0f SHA-256: 018c26981db67703a6e4396890ab5c28e515f8c79a54c7cbd9672e68c86d479d
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 URL leading to a suspicious domain. ClamAV and ML classifiers flagged this file as malicious, specifically as a phishing trojan. The embedded URL, 'https://golowaki.ru/123?utm_term=battery+percentage+android+lollipop', suggests a social engineering lure related to Android battery settings to entice users to click.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/123?utm_term=battery+percentage+android+lollipop
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/jewakimonujodekir.pdf
    • https://tatidadimu.weebly.com/uploads/1/3/5/3/135383915/tesededi_kafopejizonuw_geleviwiwixuki_luteraduv.pdf
    • http://xoroketogejuxe.mywebcommunity.org/kewadiwifolubaroxizi.pdf
    • http://bimovixexena.scienceontheweb.net/64372744814.pdf
    • https://xikematevi.weebly.com/uploads/1/3/4/3/134392378/kuxatip.pdf
    • https://cdn.sqhk.co/jivumigen/dJMwoak/the_room_place_merrillville.pdf
    • https://cdn.sqhk.co/gosukutusu/jhghdhg/99088956279.pdf
    • https://cdn.sqhk.co/luxixumogez/UxIje2Q/mor_sansar_ma_dil_ke_sitar.pdf
    • https://kapisodakogu.weebly.com/uploads/1/3/4/6/134697397/sexezivudu_jabutamobinofad_bigipewixewe_rovake.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://figejadinopi.rf.gd/nonprofit_communication_plan_template.pdf
    • http://kojenixerog.myartsonline.com/razor_e200_scooter_reviews.pdf
    • http://tujiritam.epizy.com/bobugodugejaruk.pdf
    • http://tulinavosubod.rf.gd/bink2w64._dll_fallout_4.pdf
    • http://lamuverifob.epizy.com/siwukoxalujodofopogugoz.pdf
    • http://kowewewabozete.epizy.com/61695145523.pdf
    • http://gowutavaxazur.epizy.com/what_is_the_cognitive_approach_to_depression.pdf
    • http://bifakafuwal.rf.gd/93605428847.pdf
    • http://ruvowepager.epizy.com/quorum_sae_reporting.pdf
    • http://litegukutudam.epizy.com/rizebaxa.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_off0000e246.bin
00bdd5e069700f249db34b32d6f0d5e4dd3b90650ff5015c1c438a92ca37fbb7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE246 5004 bytes
font_01_sfnt_off0000f356.bin
6b0f71b3f2227be42ec58d01c9b3094a7f4219a827fb97ab4806798699745e99
pdf-font-stream PDF embedded font (sfnt) at offset 0xF356 10916 bytes
font_02_sfnt_off00011841.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x11841 4324 bytes