Malicious PDF — malware analysis report

Static analysis result for SHA-256 002d21f7e9e9c813…

MALICIOUS

PDF

73.8 KB Created: 2021-03-16 16:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c66169d8d70a078be316f863671b01c5 SHA-1: e13d5148f7adb91233e77d3cea5e441096799079 SHA-256: 002d21f7e9e9c81398b6a0445a1dbcba363f98e698b51895af8f1490397ae6ff
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, characteristic of a link farm or phishing lure, and is flagged as an advance-fee scam. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. The document's structure and content suggest it is designed to trick users into visiting malicious sites, likely for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://nipisod.ru/strik?utm_term=what+does+double+down+mean+on+fanduel
    • https://cdn-cms.f-static.net/uploads/4406466/normal_603c2699a75f9.pdf
    • http://idealicaitalia-official.site/sugovanoxabotuz9jhxw.pdf
    • https://cdn-cms.f-static.net/uploads/4449178/normal_5fd34efa36723.pdf
    • http://interbank.link/tejazexafw0lll.pdf
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5fcd572d8f407.pdf
    • http://reduslimitaly-ufficiale.site/nasazawig9x0nw.pdf
    • https://cdn.sqhk.co/givifevulo/igsRzGZ/hypixel_bedwars_map_list.pdf
    • https://cdn-cms.f-static.net/uploads/4390052/normal_604cd3669ab56.pdf
    • http://pogadai.xyz/dowufazozavona6pejx.pdf
    • http://savadaqwe.space/vuxoxobafoxul4anxd.pdf
    • https://cdn-cms.f-static.net/uploads/4408984/normal_5fd1d3b2f30ae.pdf
    • https://cdn-cms.f-static.net/uploads/4379846/normal_601bb6ed3ac00.pdf
    • https://cdn.sqhk.co/nisikevepoxi/gDiegic/giguwopiz.pdf
    • https://static.s123-cdn-static.com/uploads/4470524/normal_5ffff72097584.pdf
    • https://cdn-cms.f-static.net/uploads/4392862/normal_6047ccc5517ba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bitajemisajoz/47447507593.pdf
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_e049c73ac7a74cd6be2c7b84e4d2dc0b.pdf?index=true
    • https://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_118f0d39af0e418ea3cacc08d811f7d8.pdf?index=true
    • https://s3.amazonaws.com/retisovojor/wipepuwagufidemi.pdf
    • https://d12e84a0-9808-45da-82c6-613dfe540d1b.filesusr.com/ugd/dc8a8e_c4716208cf7c4f518e0abac31273433c.pdf?index=true
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_92fa82af970a4ff3b4881a260475b8ee.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfea.bin
db62dee137db242515f908f0adb1043319880b3795648cd25089c1dec699c011		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEA 5296 bytes
font_01_sfnt_off0000f1e2.bin
737ebc678b6ebc96340d95c07c5de654249b52a9bdf9d31927dec6d893446081		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 12092 bytes

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