Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6f6cf78470f501…

MALICIOUS

PDF

50.1 KB Authoring application: Solid Converter PDF
MD5: ff0fd649dc688a715a13cb592a763b9b SHA-1: 2864d4070d88c64e5ec77b823b8aafec1211906f SHA-256: cd6f6cf78470f50116c9f1eb7e80e4356ddad8e2776752f38b0eb887f30fc9f7
120 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, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The primary IOC is the first URL in the link farm, http://rublevochka-west.ru/uploads/2020/01/27/9f61f856.pdf, which is likely used to redirect the user to a malicious site.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://rublevochka-west.ru/uploads/2020/01/27/9f61f856.pdf
    • https://kofumonuzolesa.weebly.com/uploads/1/3/0/6/130604473/74190e84.pdf
    • http://kumuxu.0106shop02.fun/uploads/2020/01/28/9a9fa135286b34.pdf
    • http://janpalson.com/uploads/1/3/0/2/130288486/pomuliwe-relufet-tofasopijoma-mobulubetig.pdf
    • https://jumamovi.weebly.com/uploads/1/3/0/4/130488846/d7abbe203235465.pdf
    • http://lajerinuti.0706shpps02.fun/uploads/2020/01/29/demewi-gewagigigif-puzaru.pdf
    • http://zipurum.hercareer.pro/uploads/2020/01/29/furegeruwu_sogek_gewudix_gifudojit.pdf
    • http://nobo.rucoolcash.xyz/uploads/2020/01/27/8244474.pdf
    • http://fofafix.ecokzn.com/uploads/2020/01/27/27bc8687648c30.pdf
    • https://lakagagapida.weebly.com/uploads/1/3/0/2/130291689/jifamimekepix.pdf
    • http://mmjplantation.org/uploads/1/3/0/2/130287445/3872f2.pdf
    • http://silverrivercoaching.com/uploads/1/3/0/5/130542922/c55d3b925b4860e.pdf
    • http://web-delo.icu/uploads/2020/01/27/xevatugikakibi.pdf
    • http://swissinnovationchallenge.com/uploads/1/3/0/6/130620390/zabuwapileler-sonewiravegaka.pdf
    • http://bimov.individ.me/uploads/2020/01/27/6468449.pdf
    • http://rodizuga.womensbeatuy.net/uploads/2020/01/27/xudesawonarowe-panum-mokusofo.pdf
    • http://shopsone.fun/uploads/2020/01/28/7370558.pdf
    • https://sodoxute.weebly.com/uploads/1/3/0/4/130483847/85749032a98cc30.pdf
    • http://gustavogonzalez.mx/uploads/1/3/0/3/130323302/259a57f73fe0.pdf
    • http://tuzar.topmanicure.ru/uploads/2020/01/29/movojipebujojidi.pdf
    • http://suwinojod.gamer-card.com/uploads/2020/01/29/3303fbb81ca4c2.pdf
    • http://liveprofit.online/uploads/2020/01/28/vuwikij.pdf
    • http://madisonadvancedlearning.com/uploads/1/3/0/2/130273776/xoterelapu_biremiwifaveve_babevokapav.pdf
    • http://ndhaquascapes.com/uploads/1/3/0/3/130313638/dokose.pdf
    • http://artexart.uk/uploads/1/3/0/4/130483480/130483480.html#diagramme+de+mollier+vapeur+d%27+eau
    • http://bimov.individ.me/upload

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000186e.bin
13f1fe872e436bb8383d5390e2e99ed7eb0d92bf76b6d7e0e8c6c33ed1be47d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x186E 10436 bytes
font_01_sfnt_off00007332.bin
3d6a4c1961d764ed456dc399b24f110500daa9966e0e3469cac10dfa4cc07e0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7332 2816 bytes
font_02_sfnt_off00007ca0.bin
cbadadfc837eb6c758d077217bfbf158a98bdcd4108de75fb9034e1d6a9b9709
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA0 16064 bytes