Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a52a710342edb74…

MALICIOUS

PDF

68.0 KB Created: 2021-02-13 11:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f256c1765fec4753d78b8a06df1c20b SHA-1: 5bb53b5209fffbd47f358707c0b4302edd512fa0 SHA-256: 4a52a710342edb740d17de0cb188f0baf92fc360f1991d540e53d1920e50a9a4
186 Risk Score

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wix?keyword=2004+sea+ray+parts+manual PDF link annotation
    • https://vezisadorudaruj.weebly.com/uploads/1/3/4/3/134349324/bodowugidiwagex.pdfIn PDF document text
    • http://lavka-karamel.ru/campaign_strategymi6a4.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/eFHjaU7/mars_colony_game_rpg.pdfIn PDF document text
    • http://skidki-day.shop/baban_marathi_ringtone_songsd1b5.pdfIn PDF document text
    • https://xudapunazegiwav.weebly.com/uploads/1/3/2/7/132741045/derujil.pdfIn PDF document text
    • https://vodesaladamaju.weebly.com/uploads/1/3/5/2/135298616/relivorujepajise.pdfIn PDF document text
    • https://guxatizozekeme.weebly.com/uploads/1/3/4/7/134733227/6452089.pdfIn PDF document text
    • https://wirorovikematu.weebly.com/uploads/1/3/1/0/131071137/3967ebd304c88.pdfIn PDF document text
    • https://sewetinupas.weebly.com/uploads/1/3/3/9/133997680/637d3aee6a907.pdfIn PDF document text
    • https://cdn.sqhk.co/susopavazane/dheohg7/funny_song_ringtones_for_iphone.pdfIn PDF document text
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/raxeradila.pdfIn PDF document text
    • http://logoped-samara.ru/busta_rhymes_discography_torrentzy4d0.pdfIn PDF document text
    • http://fruktovik.com/repaguranikesc6jlr.pdfIn PDF document text
    • https://gutoserenenew.weebly.com/uploads/1/3/2/6/132681448/konikodikadodix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B0 5060 bytes
SHA-256: 8f5144ae2f757f6bb3118754e1ef57424fa05d72d2f6e9721dd47f2a8ed714f9
font_01_sfnt_off0000c8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C6 14256 bytes
SHA-256: 7c5806369c54905249488e0d85176f7626e5453afdc07c2cf4276555e516f272
font_02_sfnt_off0000f501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF501 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3