Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d501fb36a47606f…

MALICIOUS

PDF

76.4 KB Created: 2021-03-13 22:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 777ad49dc5c981fc452d89a5e821ef11 SHA-1: bffd3cc3709859a0bd8c32e291990b5faa26a698 SHA-256: 6d501fb36a47606f470fa652b4ec786c4cab3e24a03f50449fe1b4b6d67d42a9
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The PDF's structure, identified as a link farm on disposable hosting, further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://fokemale.ru/strik?utm_term=cortisone+shot+cost+shoulder PDF link annotation
    • https://cdn.sqhk.co/nosuterib/iAjaabW/off_road_extreme_jeep_driving_adventure.pdfIn PDF document text
    • http://gudokav.sportsontheweb.net/22678291560.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/your_wish_is_your_command_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/9NfyiaT/23478772415.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/nhisEhe/bejeweled_2_full_apk.pdfIn PDF document text
    • http://nakozek.mypressonline.com/fomofosafulixunisawewud.pdfIn PDF document text
    • https://cdn.sqhk.co/dinokafoxume/hgey4kG/sasidibuzonufotabusiwaf.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/g2hgeD1/lopofogexobevukasiduzini.pdfIn PDF document text
    • http://fidafevemikiwe.mywebcommunity.org/vesojeb.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/9453172637.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/zorba_the_greek_book_critical_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38168a8d-b391-43ad-9a2a-60b434f7cbb7/how_to_edit_image_background_in_paint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c765624-2fe3-47e2-84e4-2ea67eac6aeb/mejetip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77bb73a1-f9bd-4b7b-99c8-118429044b77/18379203784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c7e902c-df40-49e8-9231-9e935b9ba4e9/62832971551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c42e93e-61ca-47e6-a0ea-49f05da1a811/snow_whitening_gel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d13911-32f7-47f2-a331-6e9ce57330ea/iso_22000_internal_auditor_training_course.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa0954b-af3e-4a48-8b80-c8bb6a297491/cast_of_one_remains.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37e7ccc-b43b-4e2b-ae17-8a5fdedb5ec3/singer_touch_and_sew_600e_bobbin_case.pdfIn PDF document text
    • http://wudemexa.myartsonline.com/list_of_bailable_and_non_bailable_offence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a01ff9-1d64-4b9d-b819-6b282cd8e12d/nobizane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/840eb965-7e8e-4781-b0f8-ec0a8f71d7ec/jafobezebafujosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d73d34-7745-4dd0-834e-695c235917b0/rogepe.pdfIn PDF document text
    • http://salajire.onlinewebshop.net/salejugorusejipexo.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_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 4720 bytes
SHA-256: d7f5834fb20dcca840af2593f9b53a687a09393af0579ec139c37a3ecadfa927
font_01_sfnt_off0000ff3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3C 10844 bytes
SHA-256: 447d952e589ab9b91bd6483f682c97160436fabc9b50308af444b8c39abd08bf