Malicious PDF — malware analysis report

Static analysis result for SHA-256 908a1e875c0f9916…

MALICIOUS

PDF

80.5 KB Created: 2021-05-19 07:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ecddf7edccb67793ae2da37ec34dd4aa SHA-1: 141632a1f1327043269a05bc826c5e018867d242 SHA-256: 908a1e875c0f991682d0dff15dd48bbb12bf988dabbd1d5981c63c0fb0cb86cf
134 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, with one prominent URL pointing to a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The 'SE_URGENCY_LURE' heuristic indicates the document may use time-sensitive language to prompt user action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pelibifir.ru/strik?utm_term=seekers+notes+hidden+mystery+cheats+haunted+lights PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501660/normal_5ff4dd86a4ccd.pdfIn PDF document text
    • http://jumuzonogajal.iblogger.org/sixesajaduwuzudivekif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_604bac39d05ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384036/normal_600451f40bd97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fadadedezeker/44090683590.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10c05abb-26ca-40b3-94b8-ae2e8f7d415c/kudizawudidogoraboxelejat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08825d88-5c0d-4741-ba52-7585790a14c7/beats_pro_vs_fake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acfe681a-a230-45b1-bf91-d828a3d7b4e0/53550220690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa98b29-8347-4bd2-811e-2e89facc31db/oracle_sql_to_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/940d1652-172d-4dcf-83a2-126f0b00ea24/how_to_balance_a_whirlpool_top_load_washer.pdfIn PDF document text
    • http://dikewovob.epizy.com/agribusiness_in_kenya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6877e2-fdbf-4fd7-95d0-2f09c3c03161/good_icebreakers_for_virtual_meetings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f5f89a8-8ad1-4fc2-8a48-b5297704c72c/star_wars_how_to_become_a_mandalorian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0468b25b-f510-4f02-bbda-c36db4702e18/ubuntu_command_line_tutorial_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fac8b4f-558a-4b2f-b2d7-6bbfaca15e9e/pimoxibijozus.pdfIn PDF document text
    • http://jovelabomitom.epizy.com/bangla_song_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d12b8466-68b3-4590-869e-d828313710a6/sims_3_cc_skinny_jeans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1431393-4f68-42a9-9352-95d93fc39710/the_collector_2009_filmweb.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/11303078431.pdfIn PDF document text
    • http://sivutesafukim.rf.gd/bus_pass_application_form_listening_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEE 5504 bytes
SHA-256: cc2f21059a350d54b587c4d3b37bad9c492c99cca0d4292c4c071c4308256282
font_01_sfnt_off00010175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10175 10856 bytes
SHA-256: 1a17e750634d950afeb6361a1e8aeef0496382258860f1c6e05e99ab4453b098
font_02_sfnt_off00012652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12652 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2