Malicious PDF — malware analysis report

Static analysis result for SHA-256 4180d8b12d34dc42…

MALICIOUS

PDF

36.5 KB Created: 2020-04-12 06:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 79d256265a8358d7f5687f13a6336081 SHA-1: 24e767c2d46dbe90e561e6722abe79121f4393ad SHA-256: 4180d8b12d34dc424a576d23ca6ac1d2767ae68185dd50f086c5dd6793f15e75
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, identified as a PDF_SEO_LINK_FARM heuristic. One of these links, http://chessrandomly.com/uploads/1/3/0/2/130270894/130270894.html#98-383+introduction+to+programming+using+html+and+css+pdf, is presented in the document body as a programming guide. This suggests a lure to direct the user to a potentially malicious website. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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 http://chessrandomly.com/uploads/1/3/0/2/130270894/130270894.html#98-383+introduction+to+programming+using+html+and+css+pdf
    • http://qijidaoyin.net/uploads/1/3/0/3/130379135/kozulapep_kefasi_gokoxufefopota_romulesuru.pdf
    • http://chicagoplanter.com/uploads/1/3/1/4/131409474/pefagelisawubetas.pdf
    • http://lisagarside.com/uploads/1/3/1/4/131408849/1882074.pdf
    • http://vm-co.com/uploads/1/3/0/5/130544703/wenik_valeful.pdf
    • http://ponyofmydreams.com/uploads/1/3/1/6/131606362/9307632.pdf
    • http://blackmountainoptometry.net/uploads/1/3/0/5/130544303/ab8e0a2f5.pdf
    • http://serenityeventplanning.com/uploads/1/3/0/8/130873849/gararavipexutebas.pdf
    • http://berrynicejams.com/uploads/1/3/0/6/130639747/6970cb5a8b7ce.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000646b.bin
ccb5e459a3849eeb58317b47e1b56732e2027dbe1d63f1ed784afac5730c3cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646B 8188 bytes

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