Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea546dc07670ac75…

MALICIOUS

PDF

75.8 KB Created: 2021-03-16 21:01:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ad5b248a8070dd109a21af8a3749f01 SHA-1: d0956f089d8bdae2cb9e00e7d5afa71e6f057b77 SHA-256: ea546dc07670ac7565f244e79c6813fe81806d6aa342eb2ff1a98dd7e869d51d
164 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are likely part of a link farm designed to improve search engine rankings for terms like "lords mobile cheats". The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wix?keyword=lords+mobile+cheats
    • https://lavefikamov.weebly.com/uploads/1/3/0/8/130813740/waxifumewukuto_tixorikavixun_wukuverinugijip_bisixogen.pdf
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/4392130.pdf
    • http://bixaxivajujojar.mypressonline.com/infantino_flip_advanced_carrier_recall.pdf
    • https://jomigotub.weebly.com/uploads/1/3/4/7/134748998/ed77053628b2f.pdf
    • https://gimuloge.weebly.com/uploads/1/3/0/7/130775506/5d312a.pdf
    • https://visatedujapi.weebly.com/uploads/1/3/0/8/130814459/b31c13371751.pdf
    • https://wetogukonitama.weebly.com/uploads/1/3/3/9/133997956/xakevip-vopibilaje-tezosikadakup-fipasus.pdf
    • https://wepejusekubikur.weebly.com/uploads/1/3/4/4/134441987/6949283.pdf
    • http://tofotibuwul.sportsontheweb.net/88223818130.pdf
    • http://zobotalemogi.sportsontheweb.net/michel_foucault_panopticism_explained.pdf
    • http://visunuduxat.mypressonline.com/add_subtracting_fractions_and_mixed_numbers.pdf
    • http://tefitagesev.mypressonline.com/wekufurudilotamu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pajeriramal/44567462161.pdf
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_e64dbe2b1ca94f4fbfc5f5310dec1f78.pdf?index=true
    • https://s3.amazonaws.com/nitatotol/bengali_film_song_alo_free.pdf
    • http://lamupimifuban.onlinewebshop.net/phrasal_verb_spanish_translation.pdf
    • https://53860ffb-5975-4088-b838-5c82367c2827.filesusr.com/ugd/0d2908_4382b26b2f3846208b1da3fd22c3c20f.pdf?index=true
    • https://da5bec28-7969-4117-8ffb-5069fce5e80c.filesusr.com/ugd/31593d_9b8bc711a9cb4dec959e82d1b197cee3.pdf?index=true
    • https://s3.amazonaws.com/sowewazulejewi/35704090672.pdf
    • https://s3.amazonaws.com/sifawekujiki/tecno_spark_2_ka70_firmware.pdf
    • https://s3.amazonaws.com/ponivotigegepub/lazere.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_off0000eadf.bin
2579917056ea519aaf590f308590cf086a00ff9b6ac502bffce8d1f8893071b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEADF 5260 bytes
font_01_sfnt_off0000fc8d.bin
a118b156240d1a5fc07180cc9bbe054f624b2dc12e5e3cce92b1b0640bc0e322		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8D 10604 bytes

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