Malicious PDF — malware analysis report

Static analysis result for SHA-256 db59ded294f1fdbb…

MALICIOUS

PDF

68.5 KB Created: 2020-11-26 20:42:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc99e8f449873a7f1ae198915484962e SHA-1: 9298bbb59ebb72f52041005066106c07bc00a993 SHA-256: db59ded294f1fdbb67b27f3fc08b1e067a235e693c484b68b0a6fd769cb5c46a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains including 'traffking.ru' and multiple 'weebly.com' subdomains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The document body, though heavily obfuscated, contains references to '123movies' and 'Shutter Island', suggesting a lure to pirated content or related scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://traffking.ru/123?utm_term=shutter+island+123movies
    • https://cdn-cms.f-static.net/uploads/4384045/normal_5f90d1fd362c5.pdf
    • https://cdn-cms.f-static.net/uploads/4475212/normal_5fb2ce8f15945.pdf
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f96bc7257570.pdf
    • https://cdn-cms.f-static.net/uploads/4455886/normal_5fb8a62c63219.pdf
    • https://sawilemevopano.weebly.com/uploads/1/3/4/5/134577559/zuparesifuzifama.pdf
    • https://kesizizuju.weebly.com/uploads/1/3/4/3/134384541/muxodasedi_palupi_powokupuwiwag_jotuf.pdf
    • https://wesujugureju.weebly.com/uploads/1/3/0/8/130874517/f812834d1.pdf
    • https://wovuxitijijigot.weebly.com/uploads/1/3/4/5/134524902/ruvake_rimofexarigu.pdf
    • https://cdn-cms.f-static.net/uploads/4444866/normal_5faa6dd07ab18.pdf
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5fb556613ec32.pdf
    • https://cdn-cms.f-static.net/uploads/4379974/normal_5f8d67b82bfd5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/donarepemi/77971276373.pdf
    • https://s3.amazonaws.com/labitajaxatufib/igo_here_maps_europe_2019.pdf
    • https://uploads.strikinglycdn.com/files/6e045d21-f941-47f4-825b-01db98b00aaa/82867634596.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f3.bin
2fb9a3b99fbd1cb3f4127b5ff65ed5e64ae6ffc082b50983204082c3d0eea6ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F3 5576 bytes
font_01_sfnt_off0000c6bf.bin
4d22e4a4a3c2db5d106017643adddb38d34404e8b05270a340ab903015f67024		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BF 10696 bytes
font_02_sfnt_off0000eb52.bin
1b90a8a3d96f10d33735ecd66f56a417348d6d3cafa2050bd3f034202e107ae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB52 16888 bytes

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