Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a78230e693a5e7…

MALICIOUS

PDF

76.0 KB Created: 2021-05-22 11:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e92114a24108aa8ad2e1d9179d5cc956 SHA-1: bb5aa4695a9db874939deac8b8c502676f3819ec SHA-256: c1a78230e693a5e7cdc23f79e55c8911e53add878bd1b715d7288741f5057bc0
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to PDF files hosted on Weebly and other platforms, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains text related to movie downloads, which is a common lure for phishing or malware distribution. The presence of multiple external URIs and a PDF link farm heuristic strongly suggests the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/strik?utm_term=chandramukhi+full+movie+download+in+tamil PDF link annotation
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/1483529.pdfIn PDF document text
    • https://pajobozonojamu.weebly.com/uploads/1/3/3/9/133997184/dfb2b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5fde653953554.pdfIn PDF document text
    • https://pukokisawar.weebly.com/uploads/1/3/4/7/134749025/465226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454982/normal_60690cd284fe4.pdfIn PDF document text
    • https://sudomudes.weebly.com/uploads/1/3/0/8/130874284/xaripazevixowuzonit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449622/normal_5fedc6bbecc4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482880/normal_60264fd679e76.pdfIn PDF document text
    • https://wofexajolevesi.weebly.com/uploads/1/3/5/3/135302186/2279588.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/fedufiporara/eos_650d_manual_english.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/34161806187.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/zutizo.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/78360266893.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/keguz.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/hypogonadism_guidelines_nice.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/zexisodomitotasi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/5447770105.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/endnote_x8_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/biweriderodowogowukelav.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9D 5088 bytes
SHA-256: 6e9b483855d8a7507ab6ed99a701154bd12b81fa6f8cdd50190b32f7e7de4ffe
font_01_sfnt_off0000fed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED3 10596 bytes
SHA-256: 33a91757da84240c556b72dfeb678ac1a083c0207a25d6fe82ce7a5159ab2791

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