Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab04b07f8481b282…

MALICIOUS

PDF

78.2 KB Created: 2021-02-21 00:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0abf2be2f61fd5cc104785cf2ac7dfe0 SHA-1: 5c618d2be33bcdb3bd874de8e754959e86a49f22 SHA-256: ab04b07f8481b2822380803b79bd228c69db139986464d96ca33427332d0bfcf
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 0.9998

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://bologen.ru/123?utm_term=how+to+drain+a+front+load+lg+washer PDF link annotation
    • http://berkeciftci.net/477616790280nzg.pdfIn PDF document text
    • https://cdn.sqhk.co/juzurupivepo/hiiFiiw/world_rally_championship_2020_uk.pdfIn PDF document text
    • http://nugudisidagok.22web.org/63378926665.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/Nrightt/tetutiwujupidapez.pdfIn PDF document text
    • https://cdn.sqhk.co/pegipoveridi/ifhjxie/marogabijir.pdfIn PDF document text
    • http://biomanua.website/mitutoyo_bore_gauge_zero_checkergxu0e.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/hOfibic/7815724844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489846/normal_601b63ed992aa.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/aieaF4y/tojumi.pdfIn PDF document text
    • https://cdn.sqhk.co/xusorawoka/jgehbRm/scribble_rider_game_download_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495997/normal_602529d2d1f8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubemumibesedu.epizy.com/interim_financial_reporting_ppt.pdfIn PDF document text
    • http://boribasumagit.epizy.com/god_almighty_movie_free.pdfIn PDF document text
    • http://gufofajosegadul.rf.gd/mingling_of_souls_matt_chandler.pdfIn PDF document text
    • http://jiviwuruxaboku.epizy.com/wwe_attitude_era_dvd_free.pdfIn PDF document text
    • http://wifotomosif.epizy.com/business_dictionary_for_pc.pdfIn PDF document text
    • http://gizamir.epizy.com/que_personaje_de_cazadores_de_sombras_eres.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_off0000f421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF421 5220 bytes
SHA-256: c56d1bc848310b60b1d4902f5801372ce472d681af5142f56ece8bb06060f7d8
font_01_sfnt_off000105f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F1 10972 bytes
SHA-256: 2a70a75d9b50b3e32265f4681cbdf1087a06e53030f3d10b1d59424f96e873c7

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