Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba2f67eed9109ad…

MALICIOUS

PDF

74.8 KB Created: 2021-03-19 16:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bfa6539ba207cc47d5e817b95bb1e90 SHA-1: 79f775792bd48db72b055066a0cc52bb88651195 SHA-256: 1ba2f67eed9109ad8545926e44c6dad14fa83af9f10f6e901729627b179705ba
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or SEO spam operation. The embedded URLs point to domains commonly associated with phishing and malware distribution, such as 'ponafet.ru' and 'llloooodddd.space'. No scripts were extracted, but the PDF structure and numerous external links strongly suggest a phishing or spamming attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/wix?keyword=maroo+of+the+winter+caves+movie
    • http://llloooodddd.space/books_in_order_john_grishame7mko.pdf
    • http://taxevidel.medianewsonline.com/lotus_cars_for_sale_ebay_uk.pdf
    • https://cdn.sqhk.co/vuveleni/OA9jajf/bugs_bunny_no_picture.pdf
    • https://cdn.sqhk.co/gujipiror/j2zjdgj/soul_collector_ending_explained.pdf
    • http://nusowutevu.getenjoyment.net/78519723552.pdf
    • http://doucheapp.xyz/156874254429ygps.pdf
    • https://cdn.sqhk.co/fimegasaz/jgclyjg/adobe_spark_post_graphic_design_story_templates.pdf
    • https://cdn.sqhk.co/purorelaz/hfjgiha/bargain_hunter_uk_app.pdf
    • http://digitalmedialit.com/how_to_replace_battery_in_liftmaster_garage_remote3b3xk.pdf
    • https://solatozelejas.weebly.com/uploads/1/3/4/7/134714892/rugegipif.pdf
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/vudagabipor_kunuvowefip_jarokoditeboza_dugenulegilafap.pdf
    • http://bristol-yalta.run/converting_cm_to_m_worksheet_year_3iuglf.pdf
    • http://espaceabone.com/was_jesus_born_on_christmas_or_eastertc3hh.pdf
    • https://cdn.sqhk.co/navimoxa/hf6BigD/26050783193.pdf
    • https://mipapipav.weebly.com/uploads/1/3/4/0/134012398/diwem-dixanikonu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gewisetug/babysitting_application.pdf
    • https://s3.amazonaws.com/zamemigojat/69673601235.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/assentamentos_rurais.pdf
    • https://s3.amazonaws.com/pewibim/zibozuri.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_off0000e7b0.bin
dba18e28e6a3a07cb3e582f1253ee7d876a1d3355ddcb7cd807d0f0a3e15af03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B0 5244 bytes
font_01_sfnt_off0000f983.bin
7b8c360cf3b51f6eccb5be614a33cf4265860d27b33f31658becdd607e7a1584		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF983 10540 bytes

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