Malicious PDF — malware analysis report

Static analysis result for SHA-256 4136a2aa6a4112c0…

MALICIOUS

PDF

142.0 KB Created: 2020-03-23 09:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 51ff72e2b2d9bbc99f339f7eee1e4c63 SHA-1: b963c806ab74b1e47bda86e38cf23e5bd0900f06 SHA-256: 4136a2aa6a4112c0118fa377d0d24fafc53dbd26c4e060a5add8e7c0442697b0
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files on various domains. This pattern is indicative of a link farm or a mechanism to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, suggesting the primary purpose is to generate traffic or host a collection of malicious documents. No scripts were extracted, limiting the ability to determine a more specific payload or family.

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://blessingdesign.org/uploads/1/3/0/2/130287367/130287367.html#que+es+reproduccion+de+las+plantas+wikipedia
    • http://jtmarketingsvs.com/uploads/1/3/0/5/130539979/zujiteduzudelojane.pdf
    • http://www.rlassociates.net/uploads/1/3/0/4/130435843/832fe249c.pdf
    • http://alphaclothing.online/uploads/1/3/0/4/130483232/811f4fac84ab.pdf
    • http://ipads.buchananschools.com/uploads/1/3/0/4/130435684/kojovutowufateg_revopesezol_talaxawilisu.pdf
    • http://gnhpa.com/uploads/1/3/0/2/130270823/fuvekupaviroduvigu.pdf
    • http://uniquehousebuyers.net/uploads/1/3/0/6/130621789/fimibov.pdf
    • http://sucre.de/uploads/1/3/0/3/130313613/fimutopigaso.pdf
    • http://sunnyonthemic.com/uploads/1/3/0/4/130483767/8108360.pdf
    • http://www.freedfromsatan.com/uploads/1/3/0/3/130313180/5332995.pdf
    • http://mintparents.com/uploads/1/3/0/4/130476499/5196518.pdf
    • http://gottimber.com/uploads/1/3/0/6/130604136/368734.pdf
    • http://alovingwelcome.com/uploads/1/3/0/3/130323723/gefagozebok.pdf
    • http://todotodid.com/uploads/1/3/0/7/130775098/207c87cd8482.pdf
    • http://melissascreatablecreations.store/uploads/1/3/0/7/130739258/zilixumorepodanoz.pdf
    • http://thebestteams.org/uploads/1/3/0/5/130590545/0cd9bac595c97a.pdf
    • http://www.joes-auto-detailing.com/uploads/1/3/0/6/130639406/bebim.pdf
    • http://www.paintballinkorea.com/uploads/1/3/0/5/130588616/4012208.pdf
    • http://gelmai.net/uploads/1/3/0/8/130873930/b10edd2.pdf
    • http://www.sidewithstan.com/uploads/1/3/0/4/130436171/4931958.pdf
    • http://lilogisticscenter.com/uploads/1/3/0/5/130546283/kanat-temit-lilam.pdf
    • http://glogalbrand.com/uploads/1/3/0/5/130589452/61fe9cab9.pdf
    • http://segabnb.com/uploads/1/3/0/8/130874670/mamereg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001dcb7.bin
fdf4c5b22ad7016cb6e528e3e66568932339a9ae42ffcdce48dc209ba901d5c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DCB7 12528 bytes
font_01_sfnt_off0002066f.bin
e8d2acff96767f728aead9cdf9b70fb59902ae4d139d021ebf8e0accf5e349f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2066F 2944 bytes
font_02_sfnt_off000210d9.bin
b47abd168e13b0b9cb3acc4595dcc359ab436e90ff40105f2cc83f6817948f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x210D9 16084 bytes

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