Malicious PDF — malware analysis report

Static analysis result for SHA-256 eded188e72968753…

MALICIOUS

PDF

95.9 KB Created: 2021-04-24 16:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8152fb39242d5851ccc625d58788cd44 SHA-1: 50645d3613f2512a00519d2500f45e00e11ee077 SHA-256: eded188e72968753d1560fd625db854a1543526eb8abdcc2f5f0d0d61fe7fda1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. The primary URL, 'https://bologen.ru/strik?utm_term=carrier+weathermaker+8000+codes', suggests a lure related to specific product codes. The presence of a ClamAV detection and a high ML score further indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=carrier+weathermaker+8000+codes
    • https://ligibumifi.weebly.com/uploads/1/3/4/6/134647936/1a1dabc00348668.pdf
    • https://xolitosoxi.weebly.com/uploads/1/3/4/5/134583661/5920375.pdf
    • http://wewogokuwidu.mywebcommunity.org/illustrator_save_smaller_file_size.pdf
    • http://firobazotu.sportsontheweb.net/2616908549.pdf
    • https://bozuwosumexoxal.weebly.com/uploads/1/3/2/6/132682772/guzadojatavel.pdf
    • http://kafujaguvo.mygamesonline.org/poxobif.pdf
    • https://mutefalififide.weebly.com/uploads/1/3/1/3/131383766/fetefevesaduzeje.pdf
    • https://radefikifuru.weebly.com/uploads/1/3/4/7/134723330/gadubigez_xoxobumu_ponowabotisufuz.pdf
    • https://cdn.sqhk.co/fagaxirupunu/8rgdjek/55936704238.pdf
    • https://cdn.sqhk.co/sewadokoka/ifgfGVY/legendary_duelists_immortal_destiny_booster_pack_card_list.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_6ce36417da6441959e227bf3634b2522.pdf?index=true
    • https://uploads.strikinglycdn.com/files/95887bfc-b94b-4d0a-9d24-103160f73e02/what_is_the_theme_of_the_story_orpheus_and_eurydice.pdf
    • https://uploads.strikinglycdn.com/files/41cdee0a-bc69-4744-9508-f24ab8e9dcc6/49091762921.pdf
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_78efc3acaebd4821aed2e325c1a9bbea.pdf?index=true
    • https://uploads.strikinglycdn.com/files/40312645-55e3-436c-a744-1868dc258dc7/what_is_the_half_blood_prince_book.pdf
    • https://uploads.strikinglycdn.com/files/f3f809cf-4427-44d5-aebf-28ef0ea1b887/why_is_the_light_on_my_harmony_hub_red.pdf
    • https://uploads.strikinglycdn.com/files/28f93c2e-fc6d-43c3-be4b-e56f1251f025/fenolozezezu.pdf
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_fb67c6cb7f9c4989b17f2daeea9c6721.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8fc0d668-edf4-40f3-ae3b-873b6d8b5343/chuck_palahniuk_book_tour_2020.pdf
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_40dba3fe71634e38bfa3bc66bea6307f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7e7e36c4-6f99-46a6-92a2-313c1419478f/25113988114.pdf
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_033e51f490cb4ebd984eed47b272cfaa.pdf?index=true
    • 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_off00013829.bin
dfe54dac42f21d4a80a49a8ca96eab518127e891e8bf8fe66c1f6c36d999ccb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13829 5544 bytes
font_01_sfnt_off00014ae2.bin
2c8d142416b38ab67bbf6cc454e28ca6f55ebf82a95f3899e452db8628c25dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE2 11532 bytes

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