Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e62363db63191fb…

MALICIOUS

PDF

77.4 KB Created: 2021-03-18 03:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 19907b2a5433befd3ebaab26897b7361 SHA-1: 10f81e6f0f64d0d37241bcfd6b9e1e61460401ea SHA-256: 7e62363db63191fb2fb0baf740e53d12644905eb14045855723553a14f1c7fdd
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=data+mining+software+free PDF link annotation
    • https://cdn.sqhk.co/zodavujera/sxhjbJr/minecraft_flat_world_seed_xbox_360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478132/normal_604d4881b791a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366652/normal_5ffa156c5ccf3.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/41309370048.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/xivolepixodarivorvmqcu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478670/normal_604650a825495.pdfIn PDF document text
    • https://cdn.sqhk.co/wepuvumug/ibxhagc/51308456976.pdfIn PDF document text
    • http://mosuxuvemuzuwex.mywebcommunity.org/adidas_brand_guidelines_2020.pdfIn PDF document text
    • http://fbdirect.site/a_critical_survey_of_indian_philosophy_free_downloadrc8kt.pdfIn PDF document text
    • http://it50discount.pro/gapanebadavozerojubagu8of0g.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/aPUhhje/musician_s_friend_corporate_office_phone_number.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/how_to_write_a_public_relations_plan.pdfIn PDF document text
    • http://idealica-italiaofficial.site/wekawejosetanaliveqhapn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/formulas_de_volumenes_areas_y_perimetros.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/wulanuzosop.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/teranoxekoxobeladazepi.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/zapudowopigumegiwiv.pdfIn PDF document text
    • http://direwoded.rf.gd/fonebuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/27638301117.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/73854813335.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/26602537525.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D7 5144 bytes
SHA-256: 8c299edfce63990cfd804f4b34512561b6dfcce1795aff2be63e2e3c527a3716
font_01_sfnt_off00010263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10263 11112 bytes
SHA-256: f7a61766606abfc30e4bdf8a71353017799ad762a6df11b1cf3649303703daf1

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