Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2ad1dbf9690b05…

MALICIOUS

PDF

143.8 KB Created: 2020-12-10 09:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d586fa2003f01bd2f139eb0662a311f9 SHA-1: b44341ecb83b29b88a934500893be6e1c51b4925 SHA-256: aa2ad1dbf9690b0582ed631f8fa9e9ab183df81291fdf4321ae3d14fe18fec19
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as 'Pdf.Phishing.Trojan'. The file contains a link farm of external URLs, including one pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate the document's primary purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://traffnew.ru/aws?utm_term=live+action+2003+sailor+moon+transformation
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5fb2c7a49307a.pdf
    • https://cdn-cms.f-static.net/uploads/4451021/normal_5fa26abbedf9f.pdf
    • https://ranuregobaxamig.weebly.com/uploads/1/3/4/8/134889764/1262860.pdf
    • https://rititebavoxufi.weebly.com/uploads/1/3/4/7/134705535/mijivowara_muvizixiwuweman_girezi_vasenonijujudul.pdf
    • https://static.s123-cdn-static.com/uploads/4459922/normal_5fce4d17523de.pdf
    • https://rolewexuvuviwu.weebly.com/uploads/1/3/4/7/134742390/158a2a698.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc6e065d8c3650128342b3b/t/5fc851f94b97230d05092ebd/1606963714745/music_video_editor_add_audio_premium.pdf
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc6cbd9a038a451bcd9191f/1606863834233/adidas_cw_winter_hiker_speed_cp_v22179.pdf
    • https://s3.amazonaws.com/susopuzupure/dcouper_en_plusieurs_pages.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd15624b66d17947f7c49f/1606227301535/46627390021.pdf
    • https://static1.squarespace.com/static/5fce56132ebf7d3ac645cd13/t/5fd035bc8f1ddd5ccbd58f0d/1607480764693/remote_control_mini_rc_racing_boat_model.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014ccb.bin
340976925a30c4ec9d6d9d1cda86efd462c7f29bc3a0ac5d6b2589bba13c335e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CCB 48324 bytes
font_01_sfnt_off0001e1b4.bin
11a5d0bd498de89e3ca0cf9d1e4f0f9f7aaaae037020165b218f835e1c42feb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E1B4 5464 bytes
font_02_sfnt_off0001f43f.bin
386d3bd2fd26fcd68d82960bd31b706ec130015eff4bf5cbade3f5da49ff7f5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F43F 12392 bytes
font_03_sfnt_off00021c52.bin
6c511cd2548aab1566dad8f54fccf2be4cd056cf5a4d5d56937977fde9165995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21C52 16132 bytes

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