Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3081610912a6ed5…

MALICIOUS

PDF

104.6 KB Created: 2021-03-25 04:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36b39b5e6635e7b7f005b7bee6196f4d SHA-1: 22fa221579ea8df8c8630ad2b6ebf0723f750255 SHA-256: e3081610912a6ed5e9aed74fb96053660780c91d3d3bc337fa56061038fab8c7
156 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many URLs pointing to PDF files hosted on services like Weebly and Strikingly. The primary URL, 'https://vilenefex.ru/strik?utm_term=best+free+forex+ea+scalper', suggests a lure related to financial trading. ClamAV and ML classifiers also flagged this as a phishing or malicious PDF. No scripts were extracted, but the extensive link farm indicates a strong intent to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://vilenefex.ru/strik?utm_term=best+free+forex+ea+scalper
    • https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/becbdecdf41.pdf
    • https://cdn.sqhk.co/vopofuxo/ihCuUhc/photo_wall_collage_without_frames.pdf
    • https://cdn.sqhk.co/gufemazibafi/jiKP0rr/gotaramuvevitir.pdf
    • https://cdn.sqhk.co/numovasovev/hgheic8/download_game_to_fu_oh_sushi_mod_apk.pdf
    • http://degakak.sportsontheweb.net/school_brochure_sample.pdf
    • http://xawamiwupajev.mygamesonline.org/93800157505.pdf
    • https://borikalubir.weebly.com/uploads/1/3/2/6/132681749/8848483.pdf
    • https://jiwosanoxonu.weebly.com/uploads/1/3/5/2/135299962/lumufumixamaxesapis.pdf
    • https://cdn.sqhk.co/mopewedote/jgjhihd/nusilelekopenazaduriwida.pdf
    • http://tonojodozif.mypressonline.com/clasificados_el_comercio.pdf
    • https://cdn.sqhk.co/tasokuxu/jb0iihe/detective_story_movie_cast.pdf
    • http://xusojuvexo.22web.org/carrier_weathermaker_8000_manual_reset.pdf
    • https://jurumebaro.weebly.com/uploads/1/3/4/6/134625591/butaposop.pdf
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/lewomaresofetuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/187e06e8-c56c-477b-ba97-8069c3daf69c/8345061542.pdf
    • https://uploads.strikinglycdn.com/files/bac3eaa5-45aa-49ba-a8b6-33819101430c/its_dead_in_the_water_definition.pdf
    • https://uploads.strikinglycdn.com/files/5c4f0944-fe2d-485e-8393-26282627fde5/xakaridexur.pdf
    • http://mizetum.onlinewebshop.net/brokeback_mountain_novel.pdf
    • https://uploads.strikinglycdn.com/files/d4163305-8cf2-480b-b783-40a6468ae608/95928988817.pdf
    • http://bitines.myartsonline.com/xuvegitaxizawanorawovuta.pdf
    • https://uploads.strikinglycdn.com/files/4f1031ba-605e-4585-a134-8aaf7b3b4142/best_gopro_backpack_strap_mount.pdf
    • http://tizabapokumi.rf.gd/how_much_do_alaskan_residents_get_paid.pdf
    • https://uploads.strikinglycdn.com/files/50d3e443-9e7c-4d76-b3a0-9f8dcd2a90b3/dmc-fz2000_vs_dmc-fz1000_ii.pdf
    • https://uploads.strikinglycdn.com/files/3339992e-e204-4f6e-a7e0-9e998faab9c1/what_are_the_4_main_types_of_sculpture_approaches.pdf
    • https://uploads.strikinglycdn.com/files/a04879f7-a932-4c9b-a399-855b63bf7061/someday_someday_maybe.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_off00015930.bin
2a77df3e9bbd997a412c368eae87df0cdb0a89bd546684c37def48f8840146b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15930 5128 bytes
font_01_sfnt_off00016aba.bin
adb72aaacfb00a16483dd346aef784237508e7c221b5fa62345b4fa1487224aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16ABA 12432 bytes

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