Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8c435e42af565a…

MALICIOUS

PDF

79.1 KB Created: 2021-03-17 11:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb4f3888023033aa7a0e2494a6b7775a SHA-1: 71c58ad342fb553a03902d66603f2facfaba9798 SHA-256: 6a8c435e42af565a62cd424fcc0a965f54b41cee525576b7c3b009fe16f3dac1
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The presence of a PDF link farm and advance-fee scam lure strongly suggests the document is designed to trick users into visiting malicious URLs, likely for phishing or financial fraud. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=ayushman+bharat+yojana+pdf+download+english
    • https://ruzopujiwinor.weebly.com/uploads/1/3/1/4/131452977/2369922.pdf
    • https://cdn.sqhk.co/mepapogivoma/Kjez3ja/14348655709.pdf
    • https://cdn.sqhk.co/nupumusu/brADVPF/14935545968.pdf
    • https://cdn.sqhk.co/gomalajipo/icgfhh6/advena_apk_free.pdf
    • https://cdn.sqhk.co/lerapuraroke/7mejchd/tubemate_download_mp4.pdf
    • https://cdn.sqhk.co/vabalogu/dVjj9hi/lac_la_biche_2019_world_archery_3d_championships.pdf
    • http://gixitetopes.scienceontheweb.net/sistema_endocrino_anatomia.pdf
    • https://cdn.sqhk.co/waxusuxagaki/Qhjhcgj/smart_diagnosis_lg_dryer.pdf
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/2913225.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_b114ba1da9a04af7a53bac94fb3ebc3a.pdf?index=true
    • http://moxuzaridob.onlinewebshop.net/95249826356.pdf
    • https://uploads.strikinglycdn.com/files/bc869c57-06db-431c-864c-a468adedd78a/brinkmann_smokers_website.pdf
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_cfe8bf5f94564505bdf1a68b55c1a5a6.pdf?index=true
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_32c793e3c74e4ea0b55dfcad853f71aa.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e088cba1-2425-4bab-b32f-52eefefedf78/rasozesegapezixazufezag.pdf
    • https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_f9e5a647ca3c435f8f5712680745eb99.pdf?index=true
    • https://57ead060-d7b3-4f59-a803-6c9b47c0028a.filesusr.com/ugd/f30481_7b42c9e0f0d04f44b4e6aa8733572bcc.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_off0000f4f7.bin
10492a013b7fbf9e275cf81af4f5e557802d510c1d7994fde996d4042a0e5a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F7 5856 bytes
font_01_sfnt_off000108d5.bin
dcaefa8224ec3e40660caf250c8000be88a1e9a9f9d1542c00109ed6ad9ce9b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108D5 10712 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.