Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57d3f4fce4fc864…

MALICIOUS

PDF

73.2 KB Created: 2021-03-20 01:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927cf0d9c8bc9c933d29d7165b657dfa SHA-1: 58e555f306be9a97de0bb561f9f63c5a451cf6e5 SHA-256: e57d3f4fce4fc86485ce0f17ee0b9f223965fa62cf9400eaeb9ab23b61f7820f
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 URL related to a game hack generator. ClamAV and ML classifiers strongly indicate maliciousness. The presence of numerous embedded URLs, many of which are unknown or lead to potentially malicious content, supports the phishing and malware distribution attack pattern. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=airport+city+hack+online+generator
    • http://fb-copyright-help-from.com/sword_art_online_games_ratedfbqw4.pdf
    • https://cdn.sqhk.co/geruxibab/g3hbTjc/megezerupobuk.pdf
    • https://static.s123-cdn-static.com/uploads/4393044/normal_6007557974b81.pdf
    • https://cdn-cms.f-static.net/uploads/4492574/normal_5fd8bb1b161b1.pdf
    • http://bidimiw.sportsontheweb.net/cat_2020_paper_with_solution.pdf
    • https://cdn.sqhk.co/mofosalamo/igduggj/sonny_liston_adopted_son.pdf
    • https://cdn.sqhk.co/belexewuwif/hddnjhf/rally_racer_3d_drift_extreme_racing_game.pdf
    • http://wejaduz.mypressonline.com/fupirugo.pdf
    • http://pagebake.com/sabexuvixefetazanopa5yryv.pdf
    • http://itali-big.space/aethra_chronicles_manualbr6zd.pdf
    • http://lesuxofozadize.mygamesonline.org/break_every_chain_chords_in_g.pdf
    • https://cdn.sqhk.co/jaruxabal/hbWiihd/hockey_games_near_me_in_december.pdf
    • https://cdn.sqhk.co/zonurubo/agfijuJ/90655538052.pdf
    • http://revershjtb.site/2497685764ey57.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/najipavez/pokemon_gba_emulator_iphone.pdf
    • http://totefopige.atwebpages.com/84244286276.pdf
    • http://zotubune.myartsonline.com/autonomous_robots_bekey.pdf
    • https://s3.amazonaws.com/galinikagopit/nesoligapiwogakojare.pdf
    • https://s3.amazonaws.com/sakaburepagase/facebook_private_video_er_android.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_off0000e0d0.bin
69734a4c06ab4909a6bc7f1aad449ab0891d939b58858de537da09cac313ae5f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 5172 bytes
font_01_sfnt_off0000f275.bin
4012363fcd9a25d4f9ba6186fe355fe315ffd43894e0eb761aae486aa70d268b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF275 10936 bytes