Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca724312e72a538…

MALICIOUS

PDF

77.0 KB Created: 2021-04-14 21:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d526bc204e72e6d79f8f0066406362a8 SHA-1: 7fcd48017239f3468b91ea07dcec4b7df46e62a2 SHA-256: 0ca724312e72a53812d4789afaebbfca1fd27faa99018dab7db63600551b62dd
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_URI' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution through these links. No scripts were extracted, but the sheer volume of outbound links points to a campaign to drive traffic to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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
  • 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://jottigo.ru/strik?utm_term=novel+speak+character+analysis
    • https://dixoparogazasa.weebly.com/uploads/1/3/1/8/131871726/251485.pdf
    • https://cdn-cms.f-static.net/uploads/4414851/normal_60340e041a38e.pdf
    • https://foderojev.weebly.com/uploads/1/3/4/0/134041652/8696335.pdf
    • https://cdn.sqhk.co/rifokinimito/YqZjjcC/suwisafeti.pdf
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/0ff7f499ca99.pdf
    • http://lexamopelezun.mywebcommunity.org/historia_del_materialismo.pdf
    • https://wakaxizuso.weebly.com/uploads/1/3/5/3/135322555/gaxowatipologi_jonuxipuripubo_ginekitagesup_gakobolinoxadop.pdf
    • https://cdn.sqhk.co/pixafosabow/jijhdhh/download_game_burnout_drift_2_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4402964/normal_6018b289eee3b.pdf
    • https://cdn.sqhk.co/towevefizub/bjhZigu/jadigedowebidatefipepivoj.pdf
    • http://mufutekuson.getenjoyment.net/sport_wr30m_watch_price.pdf
    • https://cdn.sqhk.co/xilelawemu/z5xhAgj/happy_tree_friends_lumpy_scream.pdf
    • https://vowopazi.weebly.com/uploads/1/3/4/0/134096587/sevopi_talex.pdf
    • https://static.s123-cdn-static.com/uploads/4421641/normal_5ff5f75133c46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fofeguj/73247417727.pdf
    • https://s3.amazonaws.com/gosete/vexaduwugelojawusiwiziro.pdf
    • https://s3.amazonaws.com/dapekufoxiraku/formule_voor_alkanen.pdf
    • https://s3.amazonaws.com/gosete/crnica_de_una_muerte_anunciada.pdf
    • https://s3.amazonaws.com/metubevozisul/vikabi.pdf
    • https://s3.amazonaws.com/mukut/94513832455.pdf
    • https://s3.amazonaws.com/wuxupewu/tupefutaf.pdf
    • 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_off0000f011.bin
2a1c3d4c6661854fd6c2b4b5f8030a7f8746dc7a5185c38819dc5d3a53f1192a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 5216 bytes
font_01_sfnt_off000101da.bin
15d8a78a29355d35c9ca9f7941ba076619b858de6e9cb5a71750085f6631109d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101DA 11100 bytes

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