Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38a466d19fb2961…

MALICIOUS

PDF

66.6 KB Created: 2020-12-15 13:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: daf1690d24dc8f810cf5e1caec29bafd SHA-1: 609871b1b09c3c52e5b4ad192cebcd2a9023db7c SHA-256: e38a466d19fb29614f8cedc60d30173c8217ccad299f8690436b5a770b9b0b1b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=bomb+squad+ios+version PDF link annotation
    • https://takimibovejexi.weebly.com/uploads/1/3/4/5/134512521/4559795.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/vafunajisenasotudaz.pdfIn PDF document text
    • https://garijonomiwobe.weebly.com/uploads/1/3/4/7/134711127/fudinifub_barateder_bakoritefoketi.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/8384660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fd328b3682d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_5fbc1ce378a29.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/2740428.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2a898abaecd33182d8009/t/5fc3fd453c6ccf69f3da7fd1/1606679880062/spark_plug_794-00055a.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10d80e9fc3622d522f76c/t/5fd04ac55ec17a4c668d1037/1607486150789/lokuvul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc681ecaffbf90a661134fa/t/5fc9707b0d07ef0edd0d580a/1607037053377/invasion_usa_trailer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e6bd3398ff75152e0f70/t/5fc5783c6457125654f63cd0/1606776898288/the_cartel_book_characters.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e5b8a3bf4b14aba92f9c/t/5fc53dd07acac6192a6c9e6f/1606761937656/the_understanding_and_practice_of_servant_leadership_is.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/viewmodel_in_android_example.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc534cbe9fc3622d53e1cbf/t/5fc9daed81b71b40859817f6/1607064302890/free_fire_wallpaper_hd_download_for_android_mobile.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB4 5316 bytes
SHA-256: 44c0387ccf525b3263bb32cef195cc8dc2ea849964073e8c72ded27767694950
font_01_sfnt_off0000cfa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA2 1924 bytes
SHA-256: 0cb59671083664ea26d5d74b02b9ea5eb9c2f727239f9a5b813bec86abdef66f
font_02_sfnt_off0000d8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 10644 bytes
SHA-256: 683c12c9a37c17b792aae705b51bce4c43e60ab6981678967a9d3a0f86bd744c

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