Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eb067db074fc71…

MALICIOUS

PDF

77.3 KB Created: 2021-01-23 11:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a0f6d77d64866ec045b6b3f6d1e3770d SHA-1: a0a7a2cc60598db515698de672a224d7bb34d809 SHA-256: c1eb067db074fc71dc48ecf0db7ca3bbe17e4901bc7c28cb2c3b90b1addadd8b
156 Risk Score

Malware Insights

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

The PDF document contains a lure related to "Annamayya patalu video songs" and includes numerous external links, suggesting a link farm or phishing attempt. The presence of a PDF_SEO_LINK_FARM heuristic firing indicates a large number of outbound links, many pointing to other PDF files, which is a common tactic for distributing malicious content or driving traffic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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 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.
  • 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://jacksth.ru/aws?utm_term=annamayya+patalu+video+songs PDF link annotation
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/5281300.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/rLURJgg/rivals_at_war_hacked_apk.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/7998289.pdfIn PDF document text
    • https://site-1168354.mozfiles.com/files/1168354/16047143396.pdfIn PDF document text
    • https://site-1178275.mozfiles.com/files/1178275/add_text_to_acrobat_pro_9.pdfIn PDF document text
    • https://xedaloroxolujig.weebly.com/uploads/1/3/4/0/134018039/fabubuvajonofo.pdfIn PDF document text
    • https://site-1178774.mozfiles.com/files/1178774/soccer_hero_apk_hack_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/dejd8id/defiwumuj.pdfIn PDF document text
    • https://sesirolomozanu.weebly.com/uploads/1/3/2/7/132741009/7879784.pdfIn PDF document text
    • https://site-1166620.mozfiles.com/files/1166620/carrom_pool_guides__com.pdfIn PDF document text
    • https://site-1174404.mozfiles.com/files/1174404/walking_zombie_2_zombie_shooter_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/dotitotatebozifoxorewo.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/statuto_assemblee_di_dio_in_italia.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/dolejam.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/73072490990.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/hcc_screening_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/lodulasonojalevil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE311 5216 bytes
SHA-256: cd9df52a4499e2169c17c2f2d18ebd63433c240eee5ab48295423bc7d75e1cb8
font_01_sfnt_off0000f4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C6 10872 bytes
SHA-256: c3376e3023cc6c0c662c860987b3c5c2b88e5c6f3dc95dd6a17f9dd0d2dfaf26
font_02_sfnt_off000119e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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