Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c34ccdf3709885…

MALICIOUS

PDF

76.2 KB Created: 2021-05-18 18:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 60ba4bf24dca60a9194d8e0e4d7de032 SHA-1: e0e1621e1956fbce919169f81e828456da4d857f SHA-256: 66c34ccdf37098854f8d5a9ba7732862a46694e52bbe71aae123753ee7562ca6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection mechanism. The primary malicious URL identified is https://botokaw.ru/strik, which is presented with a lure related to a game mod. No scripts were extracted, but the presence of numerous external links and the overall detection profile strongly suggest a phishing or malware distribution attempt.

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 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.
  • 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://botokaw.ru/strik?utm_term=battle+dogs+mafia+war+mod+apk PDF link annotation
    • https://dovabobu.weebly.com/uploads/1/3/5/9/135978637/7228479.pdfIn PDF document text
    • https://zajinepimasi.weebly.com/uploads/1/3/2/8/132815118/cefd2624.pdfIn PDF document text
    • https://memekofonaw.weebly.com/uploads/1/3/6/0/136054412/1a8f3.pdfIn PDF document text
    • https://gojesewemuvi.weebly.com/uploads/1/3/2/6/132681304/616657bd67eb80.pdfIn PDF document text
    • https://jokozoxusatolof.weebly.com/uploads/1/3/1/0/131070378/fezukemuxojarak_towiku_limosi_fozabelafavix.pdfIn PDF document text
    • https://xijananok.weebly.com/uploads/1/3/0/7/130740199/ropegitoduj-fatapakimoguf-podanekasanusap-jupajukabovuxok.pdfIn PDF document text
    • https://pakujefaf.weebly.com/uploads/1/3/0/7/130740244/bagowil.pdfIn PDF document text
    • https://depatimuxuzox.weebly.com/uploads/1/3/4/4/134404048/5341256.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/8ee0b88a-85f5-4453-b245-54f009133b06/44559201893.pdfIn PDF document text
    • http://dixasimoxipux.rf.gd/h2so4_and_alkene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a582511-2285-49d7-80ed-419379b4c6f5/83914631627.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/used_book_perspectives_on_the_world_christian_movement.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/93289731204.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/black_platform_shoes_amazon.pdfIn PDF document text
    • http://dumirufowavuse.epizy.com/apc_back-_ups_xs_1000_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/tilalononenasa.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/linupo.pdfIn PDF document text
    • http://rixefixefasi.rf.gd/pozapafavoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fff7be06-b17f-416f-80d7-ab2cc87b4c8f/how_do_i_install_my_canon_e410_printer_without_the_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7915dc22-44e8-4acc-be59-4ea6a8f8f6d4/nilobalejujas.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/vosuv.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/why_has_my_treadmill_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/usgs_dem_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1854367-ab1a-45f8-8ebe-1414a5fd5211/97200806276.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/endorsement_agreement_template.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_off0000e16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16D 5564 bytes
SHA-256: 07b6089f24b5960a9094a6510fcdad52a75aee797b1b8e39e7676ec2dcc502fb
font_01_sfnt_off0000f45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45D 15432 bytes
SHA-256: 6457649f4e7b64a95c584aee972c9c55bd3bd86a03b666494b5b1b23606777af

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