Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f482df15280372…

MALICIOUS

PDF

118.8 KB Created: 2021-03-12 12:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01f27d02ef6349dde9a2391c210590cb SHA-1: d39e46281f2a7c993a2bb8f6cfe1eacf38d120f8 SHA-256: 87f482df1528037224177664fbdcb8df471a3946fb097e8f25dcdf33b50e84ed
196 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to potentially malicious domains, indicative of a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack involving encrypted archives.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jumiwimov.ru/strik?utm_term=el+evangelio+ap%25C3%25B3crifo+de+tom%25C3%25A1s
    • https://cdn.sqhk.co/nokotadi/jA1iceN/22759318248.pdf
    • http://hugertely.xyz/ebay_doprava_zdarma_kd_jla_20135rpt8.pdf
    • http://yourdesk.website/idaho_fish_and_game_roadkill_reportyu6mo.pdf
    • https://cdn.sqhk.co/tajiwikiter/NCMYahc/ultimate_car_driving_classics_mod_apk_free_download.pdf
    • http://accueilcmb.com/3909021598028718.pdf
    • http://cabinetshq.xyz/cyberpunk_2077_gameplay_pc_frame_dropssz7le.pdf
    • https://cdn.sqhk.co/rudolikube/icedii5/70_80_90s_music_best_oldies_songs.pdf
    • http://lbaranaydin.com/381685183738vo2l.pdf
    • http://accface.in/258814828742exeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://73099f28-10d5-4558-98a1-2f8dc61f1a2f.filesusr.com/ugd/f62eaa_351910e40ae74dc2b7c0eb3c0423dc7d.pdf?index=true
    • https://84bd2c60-91d0-47b6-9565-6ae8a6593e58.filesusr.com/ugd/963627_0323576e594c47138908c75582bc6f51.pdf?index=true
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_df15b7a0f5ad460bb0f4ffb126b2249e.pdf?index=true
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_580a540f5bf542a5ba0f9440b75e7eeb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d15ebae1-e89a-415e-a250-11a9a4bde9ae/the_sworn_book_of_honorius_read_online.pdf
    • https://uploads.strikinglycdn.com/files/ed69cbf6-2543-4e91-a63c-b68f08e5e16b/is_tai_chi_good_for_back_pain.pdf
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_09cfe25ffbe24189842c6768295bb817.pdf?index=true
    • https://e6c529cc-411f-4195-b5ea-7b5fd081490a.filesusr.com/ugd/b7ab08_895c76d956de46f290741cfc77e9271d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ada35ba7-cac0-41cf-b233-0c532901cb7d/21172360249.pdf
    • https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_7ad06de7b2bd490e85653db6430d218d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/39e514ac-c546-4b3b-8db2-b9d74a50aeb8/what_is_cof2_polar_or_nonpolar.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_off0001842e.bin
0ae23f2c4746ee4f2b7e00a95deec09aac79331e1cd678c69278f4e867058f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1842E 5648 bytes
font_01_sfnt_off0001967d.bin
fda15c7b64477ce4d144fa9d2bcbfa5ec818b0dca1d87781ad67b4cddb4d2949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1967D 11864 bytes
font_02_sfnt_off0001bd03.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD03 4324 bytes

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