Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbc9ff2bd4d5b90…

MALICIOUS

PDF

82.3 KB Created: 2021-03-31 22:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e5083fa77b136de6e167faa9a20b4b52 SHA-1: 6d92cbf07b92ae9919aff9b5ea2135126f07d588 SHA-256: bbbc9ff2bd4d5b90010b399baf98bb4da5a3a9b4523d7f09ff826077c6ae68b1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. One prominent URL, 'https://seumenha.ru/wix?keyword=predicacion+como+esta+tu+relacion+con+dios', is directly embedded and likely serves as the primary lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=predicacion+como+esta+tu+relacion+con+dios PDF link annotation
    • https://cdn.sqhk.co/detazido/bjejegh/weight_tracker_bmi_calculator_kg.pdfIn PDF document text
    • https://zelivetatop.weebly.com/uploads/1/3/0/8/130814581/zodobuwedajutebedez.pdfIn PDF document text
    • https://cdn.sqhk.co/vozogekom/Bih6gh3/wefovoxumo.pdfIn PDF document text
    • https://kunamugak.weebly.com/uploads/1/3/0/7/130739026/koxamefewujegu.pdfIn PDF document text
    • https://cdn.sqhk.co/ronuwimo/hijfggc/clash_of_tanks_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/hihijgh/best_download_manager_for_android_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/icJonDa/61272261596.pdfIn PDF document text
    • https://boseveju.weebly.com/uploads/1/3/4/5/134595203/9f0b002842b8475.pdfIn PDF document text
    • https://cdn.sqhk.co/konajera/sidGohd/mp3_music_player_free_download_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/how_to_use_modal_verb_should.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/mesidafazo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/xopivapuxubatonelo.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/android_browser_intent_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/piano_notes_once_i_was_7_years_old.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/birafafagojejuxetosenija.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/98582214176.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/93304319158.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/malayalam_movie_vimanam_songs_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/starbucks_barista_coffee_machine_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/twilight_breaking_dawn_part_2_movie_online_free_watching.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10507 5084 bytes
SHA-256: e5be2019c7e05fc21431fa0eb1ec9011b3803307bd7bc30e04a1831f29d01fd9
font_01_sfnt_off00011637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11637 10924 bytes
SHA-256: 56e6652dd10ff82acd7936c0502c5d07315420f74efde5f68faf6d8594d6395b

Open this report in the interactive analyzer, or submit your own file for analysis.