Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c1f71e15d49ff3…

MALICIOUS

PDF

74.8 KB Created: 2021-05-23 23:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6f79f037ffdb60002bc980b750fb8c52 SHA-1: e45824b9e152017c1029a385a7bbe5123d40ea56 SHA-256: 94c1f71e15d49ff3b9ef59a451f45057bad7a5576473b2d7530466678aaed077
206 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, 'https://jacksth.ru/strik?utm_term=forza+horizon+2+pc+registration+code', appears to be a lure for users seeking game registration codes. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://jacksth.ru/strik?utm_term=forza+horizon+2+pc+registration+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372355/normal_60522c2a574b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_6040ea9ef14e6.pdfIn PDF document text
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/9168400.pdfIn PDF document text
    • https://zesalogerevuj.weebly.com/uploads/1/3/4/6/134684883/24ecb27047.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/2cb4dd9.pdfIn PDF document text
    • https://werotibumef.weebly.com/uploads/1/3/4/9/134900185/soxawijaxikizipe.pdfIn PDF document text
    • https://nidukonijeso.weebly.com/uploads/1/3/1/3/131381088/wadonegur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5ff254d94a0fc.pdfIn PDF document text
    • https://gezanexeroviku.weebly.com/uploads/1/3/4/7/134756427/493468.pdfIn PDF document text
    • https://sobomevoza.weebly.com/uploads/1/3/0/7/130739746/9661137.pdfIn PDF document text
    • https://kutekedutowake.weebly.com/uploads/1/3/4/6/134635623/b03b13df7651ee2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492257/normal_60031246367ba.pdfIn PDF document text
    • https://bemilinup.weebly.com/uploads/1/3/4/3/134390274/saxenas_kitogipizagos_nozebafuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_6031253b3e060.pdfIn PDF document text
    • https://nuvarimo.weebly.com/uploads/1/3/1/3/131378817/vagukopoxag_gezewaza_labofiwukexu_kopadunono.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://uploads.strikinglycdn.com/files/472f74e3-16a8-468f-9071-5b2cdd9b4447/lodajipadapowoturomatisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ad65ef0-542f-49d6-ae18-69e18313293a/75856041664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540246f5-e9e5-497d-a299-5ed635c42a84/the_x-ray_control_panel_must_show.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42cdb977-59f9-494f-aaa0-46637f983d4c/wahl_nose_trimmer_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddc82d46-3581-47a7-99e5-2f96b3b907b8/navy_page_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d0417d0-6e75-4489-b671-da42b5237bcc/e_myth_hvac_contractor_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f354833d-643c-439f-94f8-091d4a4be67b/xizakorudiriwagos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/356b8d46-d876-4bbf-a825-17f573fdacc0/gupoboxalexesegibowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b170325f-714b-4dda-bcc2-0433045dd633/pifopigiruvexanogaxumul.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_off0000d930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD930 5228 bytes
SHA-256: 8a84b09bdcb693e678cb5cba88e9c171bf849d950dfea93169c2a1b36cc8e847
font_01_sfnt_off0000eaf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 10696 bytes
SHA-256: 6a7fc4e8b4e1958461ac782c2f63c116dade8b24580b77639098bd5318f53057
font_02_sfnt_off00010f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F50 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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