Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7b15c7399eff9c4…

MALICIOUS

PDF

41.9 KB Created: 2020-03-20 09:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4abc555bb01f015dc5c50cecbb28b8ad SHA-1: ccb084d4b2f25dbb8c9161bfc2f10a638e5a9d28 SHA-256: a7b15c7399eff9c4d51239def26db3dcc8d6ef85e562d4b1108bc1e5f8c9525d
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are SEO-optimized and point to various domains. This pattern is indicative of a link farm or a technique to distribute malicious content across numerous subdomains. The embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest this is the primary attack vector. No scripts were extracted, limiting further analysis of payload delivery.

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://balderaslandscapingllc.com/uploads/1/3/0/2/130271080/130271080.html#que+es+ciclo+while
    • http://bordertownservices.com/uploads/1/3/0/6/130621754/74260.pdf
    • http://annachojnacka.nl/uploads/1/3/0/2/130287953/wuguz-tugamepuzogu-dofelemofanol-momusarasido.pdf
    • http://kevinzhou.org/uploads/1/3/0/7/130776026/vijuxadujono.pdf
    • http://cpanel.danielvm.com/uploads/1/3/0/5/130590312/0839c8bb9.pdf
    • http://www.curerecords.net/uploads/1/3/0/6/130621707/sarovupin.pdf
    • http://daxiyangchengyulechengguanfangwang.f18.ebkf.org/uploads/1/3/0/6/130640070/letovilobiwa_fabazorepes.pdf
    • http://decheapertrash.com/uploads/1/3/0/6/130604630/mabufezelaw_ziputaloralizex_jeluwemasozipi_wozoxiviwawan.pdf
    • http://foxhillfarm.net/uploads/1/3/0/4/130488885/97a8bc.pdf
    • http://reyvu.com/uploads/1/3/0/6/130605358/kirudivimokedibawo.pdf
    • http://cpanel.feelgoodinc.org/uploads/1/3/0/9/130969448/pafunu_lonajaligafik.pdf
    • http://www.chessrandomly.com/uploads/1/3/0/3/130313105/9bbfb92dc1.pdf
    • http://insuremywedding.ca/uploads/1/3/0/7/130776409/8a177fb4dd217.pdf
    • http://remote.cgtransactions.com/uploads/1/3/0/2/130289239/bisur.pdf
    • http://givinghomes.org/uploads/1/3/0/3/130313588/7181294.pdf
    • http://www.rosadosastros.com/uploads/1/3/0/6/130620909/tupiravezesi-goxolomuf-zudodes.pdf
    • http://canepallc.com/uploads/1/3/0/5/130588407/015cd6848e44.pdf
    • http://adultchildrelationshipmatters.co.uk/uploads/1/3/0/4/130436439/9748461.pdf
    • http://fashionitaly.net/uploads/1/3/0/6/130605433/6224754.pdf
    • http://taxappeal.us/uploads/1/3/0/6/130621052/e7bb5.pdf
    • http://mymoveworld.org/uploads/1/3/0/4/130489019/6883494.pdf
    • http://triadfootandankleassociates.com/uploads/1/3/0/6/130639673/9db0a0b.pdf
    • http://www.jvs5k9.com/uploads/1/3/0/5/130588533/vunodoruxa.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_off00007580.bin
3649a222bcd914c918146f38a5c56a6adbb76a77d4b3ae770f8dd3214a30266c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7580 9796 bytes

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