Malicious PDF — malware analysis report

Static analysis result for SHA-256 045b85dac84cb1ff…

MALICIOUS

PDF

78.4 KB Created: 2021-04-07 23:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: cdadb54d698f1dd97e1473e1c2e796e2 SHA-1: ac95d6c178feca1742e29d2710c4e3a5426b3aba SHA-256: 045b85dac84cb1ff9b86eca8069e9f646058e4304427c20b01b1178eca1eb767
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a movie trailer, likely to trick users into clicking the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/strik?utm_term=let+the+right+one+in+trailer+american PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463794/normal_5feceddae4c16.pdfIn PDF document text
    • http://magazinrf.xyz/best_android_studio_projects_for_beginners7z090.pdfIn PDF document text
    • http://you-bestshop.xyz/socratic_logic_peter_kreeft_edition_3.19v5uy.pdfIn PDF document text
    • http://yognat.space/26955852711hbts0.pdfIn PDF document text
    • https://mesirurot.weebly.com/uploads/1/3/4/7/134706751/7983186.pdfIn PDF document text
    • http://iciapp.xyz/ansar_sheikh_marksheet_upscnv3xx.pdfIn PDF document text
    • https://guxuxexor.weebly.com/uploads/1/3/0/7/130775085/9575478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480756/normal_6063bad8d61ca.pdfIn PDF document text
    • https://zagezawuguzuvu.weebly.com/uploads/1/3/4/7/134731207/4262158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366337/normal_5fe348fbeab49.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/Pohbnjc/30138174069.pdfIn PDF document text
    • http://jobware.pro/rol_y_estatus_socialk52ig.pdfIn PDF document text
    • https://cdn.sqhk.co/zixifazod/ob3iaji/fake_call_center_raid_2020_kolkata.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/K5Fjfib/84856855615.pdfIn PDF document text
    • http://hookup671.site/40033713593qadl.pdfIn PDF document text
    • http://herss.space/95176927667vl2d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484093/normal_6004aec4cadc3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/98546036253.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/dozinarimitawokozun.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/48060849737.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/graphing_exponential_functions_practice_worksheet_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/57035489459.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61E 4976 bytes
SHA-256: 553095db4aaa90124753e859f759965280c7704927e5005211400ac15b11030e
font_01_sfnt_off000106e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E5 10944 bytes
SHA-256: 8e337ec48473e1e201bc00082ad841419dc56b1b4c45f429b254b2adade16d81

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