Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fdecdb5814ab96…

MALICIOUS

PDF

76.3 KB Created: 2021-03-13 23:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09000f8256c7de6f3f1d6060b5a26155 SHA-1: 9d5e0366e573432a5861ebd358b9f7933af15c33 SHA-256: d2fdecdb5814ab9678295f254c5b4cbffd6de7725b6864770445006288d9ec8a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=brida+pdf+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489257/normal_6022c3662c0bb.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/iLq7Zos/41756992389.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/ridLgfK/61773267423.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/zgg9shc/60528810538.pdfIn PDF document text
    • http://creditscorefix.info/wabanu1mzla.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/jekwngh/retafuvaduwoka.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/kihgiRL/call_of_modern_world_war_fps_shooting_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fce48846cd90.pdfIn PDF document text
    • https://cdn.sqhk.co/tolademapati/MgeM2jd/29414937400.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448347/normal_5fc613201c7d2.pdfIn PDF document text
    • http://fruit-italy.space/67415017536ero9.pdfIn PDF document text
    • https://cdn.sqhk.co/parepejapoki/ijdjdIw/8544685377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468823/normal_603afa03ae3ff.pdfIn PDF document text
    • http://popubim.iblogger.org/13768673386.pdfIn PDF document text
    • https://cdn.sqhk.co/xusozapovu/9QqijdK/kexomamafasofopurojigofe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410953/normal_6001517762760.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/kubedukowug/pupemenunikid.pdfIn PDF document text
    • http://dolifusekaxug.epizy.com/hyponatremia_treatment_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/nasevizagem.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/everyday_hsm_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/annamalai_film_ringtone.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_off0000e7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D3 5296 bytes
SHA-256: fb93e15dc8ab44b69eec9ff1274160fbd8e9d51e9bbba0ae669581a716a873d3
font_01_sfnt_off0000f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 13272 bytes
SHA-256: 217e9e28229a6c5a8f62708543d922d3578e0888379d32745a3373be3faa941c

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