Malicious PDF — malware analysis report

Static analysis result for SHA-256 adaee0bb02cdb58b…

MALICIOUS

PDF

71.0 KB Created: 2021-05-03 13:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b219388e60121870c027ee5bd1a6d068 SHA-1: ec432d57db83fe12604e774a1077859aa2f1c555 SHA-256: adaee0bb02cdb58b30de5446870a981941c273f154ee0ccba759fa11338bc743
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is jumiwimov.ru, which is likely used to redirect users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=what+is+the+meaning+of+i+am+who+i+am+in+the+bible PDF link annotation
    • https://kupubasurunasoz.weebly.com/uploads/1/3/4/6/134695217/9665380.pdfIn PDF document text
    • http://netewe8.xyz/life_and_death_stephenie_meyer_downloadwm8go.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/jadosogodasojuzut.pdfIn PDF document text
    • https://mobuverafawez.weebly.com/uploads/1/3/5/3/135346795/migeravadi.pdfIn PDF document text
    • http://universe1.space/speed_car_racing_free_arcade_racing_games_ps4xlnvd.pdfIn PDF document text
    • https://nafutitis.weebly.com/uploads/1/3/6/0/136053715/52ecc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_3fcda277864a4f45825e06bf7a0eb377.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/74db1667-5fba-46ad-ac6a-4605ab2451c9/lg_tracfone_306g_factory_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5933db2-860b-4c5e-97c5-b97efeed1056/sesejun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aafc634f-8b28-46af-a087-0320158d9591/nugalixumuvuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8caff2e5-6b60-4485-97b8-aa17f576d119/lineman_and_cablemans_handbook_11th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7befcd-a4a4-4ae6-8779-411928428c33/kanunogutaxidovob.pdfIn PDF document text
    • https://94cb5446-44f7-499c-8ddd-8d9df3a2db3d.filesusr.com/ugd/9b9c26_47b4a03f753f46828e10500a80f6307f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/040d9cee-ce8c-42a3-a079-3969d45ed934/zukito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/080176a7-fe2d-4b1d-b1d0-ab9d9dfb71da/the_crown_season_4_episode_7_av_club.pdfIn PDF document text
    • https://7e70056c-c2aa-4e53-98c5-50750123c107.filesusr.com/ugd/f8ae5d_5b91a82457f24773ad918b1f23bacc79.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29f4348-2b34-48cc-9fa8-1e09edfde2c5/32569216931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44abc28-3b29-4bad-a68e-bdc7f830c703/36923629183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d488a43d-e1b5-444e-8013-12657fa413f9/duvatimawaxasivagaposa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1983fa5-e7b6-4084-9a24-06cab13e83bf/13053806791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4ce2eb0-1149-4a5c-ac53-36cf364afe25/hp_c3180_paper_feed_problem.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_off0000d79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79C 5328 bytes
SHA-256: 7b1fa060068cd5a92f730212eac710333f0a5ec3ddcfbe02f44648921504cd53
font_01_sfnt_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 10704 bytes
SHA-256: 18a9dadbfed0a3b68afbb988a8f2810f1a8ece4866e3b9ad13750e9060ae7911