Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b098043b3e5b72d…

MALICIOUS

PDF

36.8 KB Created: 2020-06-03 14:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50f82df3b206ca4275e2c6447d68b1f4 SHA-1: e7934807697c4981aea9d5513d9080e7ca0cbfe5 SHA-256: 3b098043b3e5b72d68f615fdbaa7921ec587b5ef3c1c02fe0b0eb04cd0bd9368
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to host malicious content. The document body text and embedded URLs suggest a lure for downloading automotive mechanic data, which is likely a pretext to direct users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with the primary observed URL being http://gtwservices.net/uploads/1/3/0/7/130776241/130776241.html#descargar+autodata+mecanica+automotriz+gratis.

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://gtwservices.net/uploads/1/3/0/7/130776241/130776241.html#descargar+autodata+mecanica+automotriz+gratis
    • http://cpanel.delislechiropractic.com/uploads/1/3/0/4/130435743/8a54338.pdf
    • http://seasideproperty.eu/uploads/1/3/1/3/131398598/9c635d59.pdf
    • http://greenlife668.com/uploads/1/3/0/7/130775672/981822.pdf
    • http://jasmincaldphotography.com/uploads/1/3/1/8/131856326/8d299a31f9e11.pdf
    • http://tirsa.net/uploads/1/3/0/5/130551836/redujafo_sineb_zavuvuwipusub.pdf
    • http://golfmissiontrips.com/uploads/1/3/0/7/130775451/weboji.pdf
    • http://gtwservices.net/uploads/1/3/0/7/130776241/terms.html
    • http://gtwservices.net/uploads/1/3/0/7/130776241/dmca.html
    • http://gtwservices.net/uploads/1/3/0/7/130776241/policy.html
    • http://gtwservices.net/uploads/1/3/0/7/130776241/terms.h
    • https://katinom.files.wordpress.com/2020/05/60418003424.pdf
    • https://berilin.files.wordpress.com/2020/05/lijadisuvunokoripo.pdf
    • https://gokidomaj.files.wordpress.com/2020/05/ludukowigogalovozavuf.pdf
    • https://dipirikufuda.files.wordpress.com/2020/06/dafajexebesurilogagaxi.pdf
    • https://kokinaxiriv.files.wordpress.com/2020/06/vanodanadadonepapev.pdf
    • https://julabifefo633366968.files.wordpress.com/2020/06/kewadajazapovejetafam.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_off0000618b.bin
65310b4cb291c5e9576144bb9d51aa738f74b0902e638d16e299602a5e165ad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618B 11004 bytes

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