Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae93186773697b9…

MALICIOUS

PDF

54.0 KB Created: 2020-04-06 06:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c10c58281df1f571ce4f98aaf0f2c6a9 SHA-1: b518106f7529146d347f1cc68db8a6adf6513188 SHA-256: 4ae93186773697b9b744ec9ae114b53bed26906367a1d048f5735f42d187e9bf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links to other PDFs hosted on various domains, indicative of a link farm or SEO abuse tactic. The primary URL points to a document discussing costs, likely a lure. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://jllseattleinvestmentdinner.com/uploads/1/3/0/9/130969577/130969577.html#funci%C3%B3n+de+costos+a+corto+y+largo+plazo
    • http://apiediavenue.com/uploads/1/3/0/6/130604255/a2b236042b967b.pdf
    • http://vwj.de/uploads/1/3/0/9/130969973/213084.pdf
    • http://marylandstategrange.org/uploads/1/3/0/6/130639062/sazenu-jesovuno.pdf
    • http://bankandcorp.com/uploads/1/3/0/7/130740432/e78380333071.pdf
    • http://maviasimmsministries.com/uploads/1/3/0/6/130605498/1c2b63.pdf
    • http://mobileglassinfo.com/uploads/1/3/0/6/130639462/77b9b6c8a5.pdf
    • http://pbflsc.org/uploads/1/3/0/4/130489275/015890.pdf
    • http://eckertearthmoving.com/uploads/1/3/0/6/130640114/bupel-naposofuf-kizejut-sumukeketidis.pdf
    • http://ncnwtricounty.com/uploads/1/3/0/5/130540567/moxunifobun.pdf
    • http://sweetcandypress.com/uploads/1/3/0/9/130969706/zesezonotagos.pdf
    • http://everyhundredmetres.com/uploads/1/3/0/6/130605521/99256f9.pdf
    • http://apostmodernmind.com/uploads/1/3/0/7/130740080/ba95aae3b.pdf
    • http://byggsok-ost.no/uploads/1/3/0/7/130775982/9250912.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000916e.bin
985fa81210c9861afd9bdb0ca83e2c076fcc3106415ba5ac6c7f72681398b4ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x916E 9392 bytes
font_01_sfnt_off0000b35a.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB35A 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.