Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d415209e8080bb6…

MALICIOUS

PDF

83.8 KB Created: 2021-06-11 04:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fe089e0c10418b58c2c988ada94cabe7 SHA-1: 02621003b996972fa005ee9935d4ebfc0c761f6b SHA-256: 3d415209e8080bb6fe2f0e09df86301f26cbf1850b86c0657fa358123479dae8
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily corrupted, contains text related to game cheats, which serves as a lure to encourage users to click the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pistant.ru/pbw?utm_term=money+cheat+jurassic+world+evolution+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417990/normal_5fe084b4d43ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471995/normal_6019c53827d4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369916/normal_5fee7d7f091a0.pdfIn PDF document text
    • https://wugapiwew.weebly.com/uploads/1/3/4/5/134597386/sugiwuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_60450e8f44115.pdfIn PDF document text
    • https://boxenujanazikof.weebly.com/uploads/1/3/5/3/135302290/ledunolumudox_lovegiwikipar_xapok.pdfIn PDF document text
    • https://zegarujavo.weebly.com/uploads/1/3/4/6/134667802/tafefelutaxofokuzufu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427781/normal_60151c4f22716.pdfIn PDF document text
    • https://kavejujutafen.weebly.com/uploads/1/3/6/0/136022690/fb22a3d.pdfIn PDF document text
    • https://zanewodibamejat.weebly.com/uploads/1/3/0/9/130969445/xiliranuvuf.pdfIn PDF document text
    • https://wutosalix.weebly.com/uploads/1/3/4/6/134635680/mivalukenuripu.pdfIn PDF document text
    • https://zanikegira.weebly.com/uploads/1/3/1/4/131437850/nanejipuwoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_6044a099ee06b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5ff692043d33e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495254/normal_5fcda6581ed38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_604ce727d7171.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ba079a-d803-448a-9c09-9d365dac5e6c/something_just_like_this_mp3_song_download_mr_jatt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca07954d-17fa-4698-bb34-8e926c820599/subozog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc0fe15-176b-4f85-92f2-14eea3fb6464/albert_pike_campground_arkansas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dcde609-fd2f-4a90-828e-556ee101523e/57266974966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17b6b6cb-a5a0-4b4c-91ae-3d108d09124f/rugijunasuruboz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b8588be-ea90-4fe7-bc10-9c34d4e6b1a8/dr_zhivago_movie_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47cced05-9c5a-4697-92f8-0e08c0d08800/kukexalimamizujanojaral.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9574ccea-53ca-4f32-93de-113b9e9e5ef3/qumi_projector_mount.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_off0000f06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06A 6388 bytes
SHA-256: 21245dad77e8af4932eb31913d124ee9cbbb8fa990c849f45c198c0f91e0a08d
font_01_sfnt_off00010671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10671 5496 bytes
SHA-256: 4d915e7fcccb4a0ecbab6ce61893b2ff9d90b9cb0cdde388538f39b4dc700231
font_02_sfnt_off0001194e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194E 11784 bytes
SHA-256: 60bbb8fc21b5f305d3dc5ef86b5d0632f4d17a2acadc96aac692c0719b59097b