Malicious PDF — malware analysis report

Static analysis result for SHA-256 af41d5266780998c…

MALICIOUS

PDF

78.4 KB Created: 2021-03-14 20:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e14117eeab5200c6b1e760453ec6ba56 SHA-1: ec15ea9b06f40f5a6c1dc5b8780f2c3888447a6e SHA-256: af41d5266780998c8406cef1430e5d95cd4eb5c73993ff0c450833a8c43b8bdb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains an external URI pointing to 'zajinet.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, contains text related to license renewal, suggesting a social engineering lure.

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://zajinet.ru/strik?utm_term=do+i+need+an+eye+exam+to+renew+my+license
    • https://cdn.sqhk.co/jaxaletadi/PUghpjb/65617887584.pdf
    • https://static.s123-cdn-static.com/uploads/4420222/normal_5fc60158631ae.pdf
    • https://cdn.sqhk.co/pasivuzuke/gcCgdxs/40109002024.pdf
    • https://cdn.sqhk.co/lamidipeke/g9b4ji6/phoenix_wright_objection_maker.pdf
    • https://cdn.sqhk.co/vimewiki/hvaHges/pigotibobomanojururelaxo.pdf
    • http://thecabinets.xyz/jbl_yurbuds_liberty_wireless6twf9.pdf
    • http://sunshop.pro/28702766403k4pn8.pdf
    • https://cdn.sqhk.co/geruxibab/hajf1nS/animal_sounds_toys_for_toddlers.pdf
    • https://cdn.sqhk.co/dosovejozeb/Dc7igf3/xoralupoginifot.pdf
    • https://cdn.sqhk.co/mogizufofuj/if2eMhf/playspot_uk_make_money_playing_games_apk_download.pdf
    • https://cdn.sqhk.co/bupitagalir/TTJheOD/new_ringtone_song_2019_download.pdf
    • http://erkutungotu.com/jofusatopapilegofq13yl.pdf
    • https://cdn.sqhk.co/pinepopowig/DGIzejd/big_bang_evolution_mod_apk_techstribe.pdf
    • https://cdn.sqhk.co/bexefoboxevi/jcjcgj3/5774671443.pdf
    • https://static.s123-cdn-static.com/uploads/4466996/normal_5ffd687ff15be.pdf
    • https://cdn.sqhk.co/xalesikozip/cwIAChg/shelter_island_house_on_chase_creek.pdf
    • https://cdn.sqhk.co/samivegin/F2geght/falling_waters_house_location.pdf
    • https://cdn-cms.f-static.net/uploads/4466146/normal_602069e49ac68.pdf
    • https://cdn.sqhk.co/texafikogot/eGIuML5/xbox_beta_cold_war.pdf
    • https://cdn.sqhk.co/kopilixa/ie1iggi/65945400162.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://didewuwu.epizy.com/shoot_em_up_full_movie_1080p.pdf
    • http://zezexef.epizy.com/25793298760.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_off0000f46b.bin
a700df74a6bd0ff81260c05435590f7ae20880e3ab6b9622e0c4d6d3b769b02b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF46B 5348 bytes
font_01_sfnt_off000106a3.bin
c2c9f697707dfadeabf9406340bd3ddacdca6fb1f9c1f2a118d4ff90382d04af
pdf-font-stream PDF embedded font (sfnt) at offset 0x106A3 10964 bytes