Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca941598732f604c…

MALICIOUS

PDF

76.5 KB Authoring application: Mobipocket Creator
MD5: 8b7d837151a8281c46c6a6c67bb3b57b SHA-1: 178aefef7c22c361110f82b448c9faf9a71d7b32 SHA-256: ca941598732f604c9afcf33c56bfda8d493a23673775199085b49b2d50b98551
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files hosted on various domains, including Weebly. This behavior is indicative of a link farm, often used for SEO poisoning or phishing campaigns to direct users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification.

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 https://jolomiru.weebly.com/uploads/1/3/0/4/130490668/1717418.pdf
    • http://bukvaprava-xpa.ru/uploads/2020/01/28/42fb6473b31.pdf
    • https://tejupixotuzojot.weebly.com/uploads/1/3/0/3/130324248/paxitofogatovexep.pdf
    • http://southgeorgiahouseofhope.org/uploads/1/3/0/5/130589182/1387386.pdf
    • http://zubusu.sitibaik.ru/uploads/2020/01/27/jamikejewanuwogof.pdf
    • https://sigesavipubofi.weebly.com/uploads/1/3/0/3/130323392/zekev.pdf
    • http://babidubo.vodka-fenix.com/uploads/2020/01/28/wodapilijew.pdf
    • https://guwazilosa.weebly.com/uploads/1/3/0/2/130291523/lapelonotabufex.pdf
    • http://zimizokabo.0406shopps02.fun/uploads/2020/01/27/610ae.pdf
    • http://copperviewtucson.com/uploads/1/3/0/5/130541462/vefizatigujoper.pdf
    • http://xuruk.strouvse.ru/uploads/2020/01/27/6fb0982cad.pdf
    • http://lebag.gbpfinancials.com/uploads/2020/01/28/diziji_numudezadutif_giwuva.pdf
    • http://mugu.elmatika.com/uploads/2020/01/29/2621578.pdf
    • https://xujuzifuwifo.weebly.com/uploads/1/3/0/5/130590496/zokon-fuxusufip.pdf
    • http://lugon.03shopppp.fun/uploads/2020/01/29/4096739.pdf
    • http://fundamentsovet.ru/uploads/2020/01/29/nenopiruzev-negurogoteb-xizuxufugiki.pdf
    • https://divuluserige.weebly.com/uploads/1/3/0/5/130539093/difuzukovefexisegen.pdf
    • https://danukuwamerin.weebly.com/uploads/1/3/0/2/130288962/zowux.pdf
    • http://5igorsk.info/uploads/2020/01/27/tibib-mamaj-guwetaragumij-fomejibukodazi.pdf
    • https://totibepir.weebly.com/uploads/1/3/0/5/130546000/2fddd2.pdf
    • http://ciggysound.com/uploads/1/3/0/5/130546076/130546076.html#lectura+para+ni%C3%B1os+de+quinto+grado
    • http://fundamentsovet.ru/uploads/2020/01/29/nenopiruzev-negurogoteb-xizuxufugiki.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000179c.bin
0b0cab0f2a0171d2eea1399e947c8b420ef6d845c303732181786a55963e3e50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x179C 11388 bytes
font_01_sfnt_off0000e67f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 16036 bytes

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