Malicious PDF — malware analysis report

Static analysis result for SHA-256 da2f74028e1e5b9b…

MALICIOUS

PDF

82.1 KB Created: 2021-03-17 23:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38c61dc35ccc2897727c19c513e0cfca SHA-1: 92e2b2c0e601b25d6ad87eecfacfb2101cb87229 SHA-256: da2f74028e1e5b9b82793c33d0e806ea91d7a32d14f18bafcc5968fe1991ab0a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to a user manual, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=whirlpool+microwave+oven+at245+user+manual
    • http://mscgis.net/vuvukuzotevogogusu30q5z.pdf
    • https://cdn.sqhk.co/vobevufubito/hggcagf/35660777375.pdf
    • https://cdn.sqhk.co/pepupiribojo/ifjghhd/fozazer.pdf
    • http://rasprodavaika.ru/how_much_can_a_warhorse_carry_5ec37xl.pdf
    • http://resipowepo.getenjoyment.net/case_files_pharmacology_free.pdf
    • https://cdn.sqhk.co/foxoxaze/T9Lzibv/righttrack_liberty_mutual_review.pdf
    • https://cdn-cms.f-static.net/uploads/4444852/normal_600ca2ed5e6ae.pdf
    • http://upsbox.ru/muvegegebilifiwc3uis.pdf
    • http://palupalukagu.mygamesonline.org/olympus_om-2_repair_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4408598/normal_5ffca5747e894.pdf
    • http://zavolofa.mygamesonline.org/central_venous_catheter.pdf
    • http://letxxnx.org/maths_book_class_6b7atc.pdf
    • http://luminar2-download.xyz/system_sensor_p2r9b1w6.pdf
    • http://kutatit.getenjoyment.net/74202948867.pdf
    • http://wotaxatumumodok.sportsontheweb.net/41974273740.pdf
    • https://cdn-cms.f-static.net/uploads/4420019/normal_604af9591924b.pdf
    • http://zakomuxoza.getenjoyment.net/tc_helicon_perform_v_vs_boss_ve-20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://lisowinuxofifok.rf.gd/onenote_2013_tutorial_for_beginners.pdf
    • http://nixevafuzija.epizy.com/tufafadun.pdf
    • http://julajibumomas.rf.gd/voxuzure.pdf
    • http://zubiluwetij.myartsonline.com/47559015464.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_off0000f274.bin
23cb3c7156a89302b63b35bf2fe5cb9b8ede6df6c038b6d672ef787acade8caf
pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 5564 bytes
font_01_sfnt_off00010554.bin
b36956fd30345c09de70ccc4594d2714004a93a4319dccd4c9dac7c1bbda9bad
pdf-font-stream PDF embedded font (sfnt) at offset 0x10554 12564 bytes
font_02_sfnt_off00012de9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE9 4324 bytes