Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d948cc65f9e9e7f…

MALICIOUS

PDF

79.9 KB Created: 2021-02-11 07:37:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb1f0633f71605ef7c20e1876fb9287a SHA-1: ea6cc157127c5fa52d27e79d61a749e068924a45 SHA-256: 7d948cc65f9e9e7fb07fb584ca440f909ea27afffa143885696341407eccd2d0
104 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs and was flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Bengaluru bulls theme video song' and includes a call-to-action phrase, indicating a phishing or social engineering attempt. The presence of external URIs and the ML/ClamAV detections strongly suggest it's designed to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/aws?utm_term=bengaluru+bulls+theme+video+song
    • https://cdn.sqhk.co/jomububorava/gfEgfhc/18541999452.pdf
    • http://gijofabenetawix.66ghz.com/khatrimaza_bollywood_movies_2018_480p.pdf
    • https://cdn.sqhk.co/xixujipum/jjPgeic/my_talking_tom_2_download_now_and_play.pdf
    • https://cdn.sqhk.co/pabilere/ijgrijF/warstorm_clash_of_heroes_redeem_codes.pdf
    • https://cdn.sqhk.co/navimoxa/rifghks/goal_goldratt_movie.pdf
    • https://cdn.sqhk.co/wajerewuwer/jjtr9ii/warframe_tier_list_2020.pdf
    • https://cdn.sqhk.co/woledibiroju/H4shgjf/forest_siren_head_survival_island_mod_2020.pdf
    • http://xekokikimelaf.iblogger.org/manasota_key_florida_red_tide_report.pdf
    • http://sovuxofi.66ghz.com/orthopaedic_assessment_form_for_physiotherapy.pdf
    • https://cdn.sqhk.co/rajexizeba/hchahc3/zijifufavitezumutulijol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jezekemunidup/22519436767.pdf
    • https://s3.amazonaws.com/pasawe/jasper_report_server_open_source.pdf
    • http://xuxivobanirug.epizy.com/29595223562.pdf
    • https://s3.amazonaws.com/kubafezin/mufudijaviwozifatis.pdf
    • https://s3.amazonaws.com/waxapoz/present_participle_exercises_with_answers.pdf
    • http://gaditerigasut.rf.gd/69999855125.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_off0000eae0.bin
4b7b30459539d5918ecdebc87f0b9234d2360ae83d0d7b532d768ccb76541245
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE0 5368 bytes
font_01_sfnt_off0000fcf5.bin
de981fbf0946c49a18597143dfed46257cc446b15f20f679c02a994354ee9f47
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF5 11604 bytes
font_02_sfnt_off00012413.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x12413 4324 bytes