Malicious PDF — malware analysis report

Static analysis result for SHA-256 4470c41739507629…

MALICIOUS

PDF

69.1 KB Created: 2021-03-27 19:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6ed1e718409bbfb4286de49f78093eeb SHA-1: b23d76033373448ac415fa9572632382f8cd10c4 SHA-256: 4470c417395076299f6a92f752be727ab9d357b2bb7f65161373fa717580ec03
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document body and embedded URLs suggest a phishing lure related to 'roblox account list 2019', directing users to a suspicious domain. The presence of embedded URLs and the nature of the heuristics indicate it likely serves as a dropper or redirects to a malicious site.

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/wix?keyword=roblox+account+list+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495264/normal_60214d295d299.pdfIn PDF document text
    • http://13millions-warzone.store/will_there_be_any_festivals_in_20212adbs.pdfIn PDF document text
    • http://trynon.xyz/blood_bowl_2020_roster_builderz59db.pdfIn PDF document text
    • http://cleanup-sale.site/36092935968br4ox.pdfIn PDF document text
    • http://belplitka.ru/how_to_adjust_apple_pencil_sensitivity01of9.pdfIn PDF document text
    • https://xonedanafesiliw.weebly.com/uploads/1/3/4/6/134633415/4e9c037e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404524/normal_5fe41ace9ea55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5fd1154d9ee54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404520/normal_5fcf418a152e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_60545876de618.pdfIn PDF document text
    • https://gixosakovi.weebly.com/uploads/1/3/4/6/134677645/ronanesemexa.pdfIn PDF document text
    • https://tasitovutad.weebly.com/uploads/1/3/0/9/130969559/dojit-mulef-susewofumu-nidizafep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/varolexexus/78616482790.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/free_thanksgiving_worksheets_for_1st_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b2d3617-dc5e-46cb-b100-6b6902293d0f/how_to_shade_blood_angels.pdfIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_f21a2cf73b1041ef83fc15621b8e48a4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3383683d-7d78-49a4-99ea-39a4895d4a6d/33948845699.pdfIn PDF document text
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_f8b7e034d1ea4f64aa61eba9d6c67283.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/521f40f2-3506-412c-9e55-d0f9d6a91bf8/what_the_bleep_down_the_rabbit_hole_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/educational_movies_for_toddlers_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2150ae3-5d9c-40ca-addd-f95377a6ef76/72222122674.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/5551143076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb11593-424f-41c4-96f2-510d4e09b519/redaxepunekinubepedagado.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/2885669643.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_off0000d1ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BA 5396 bytes
SHA-256: 6ce1b362221ea5bc74b5b4bc03b81b75327ceac7177bf8d03b143e4b7e4ce947
font_01_sfnt_off0000e42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42F 10112 bytes
SHA-256: db8b58de73543481bb5f978113508d44c9acb85ec2d15357f6e7b4f2d74891dd