Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecab500ff4cdd895…

MALICIOUS

PDF

57.6 KB Authoring application: Poppler-utils
MD5: 781c70bd086b0d8fa3e039a79bafe3cc SHA-1: 16fd7a2c138fc467466e54d79190330819e94079 SHA-256: ecab500ff4cdd8952583e56371a936ad99c3eb60db7cbcb4cb02a9c19eb3d37d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files hosted on various subdomains. This technique, identified as PDF_SEO_LINK_FARM, is often used to manipulate search engine rankings or to distribute malicious payloads. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this file. The embedded URLs are the primary indicators of compromise.

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://bryelledesign.net/uploads/1/3/0/6/130603761/wereg.pdf
    • http://cpanel.hogridin.com/uploads/1/3/0/4/130483474/78f00e56a8e7b3b.pdf
    • http://webdisk.ibrahimmorgantourguide.com/uploads/1/3/0/5/130588207/9608040.pdf
    • http://nomadiccollege.com/uploads/1/3/0/6/130620710/zovaleraliline.pdf
    • http://mta-sts.listeninglistening.com/uploads/1/3/0/7/130775031/277425.pdf
    • http://elizabethgoldsteinphd.com/uploads/1/3/0/7/130775719/686599.pdf
    • http://myanmardiscover.com/uploads/1/3/0/5/130588565/e27600e79c2.pdf
    • http://lightcitytransportation.com/uploads/1/3/0/6/130640095/retam.pdf
    • http://thehandmadehydrangea.com/uploads/1/3/0/4/130477090/6005124.pdf
    • http://cpanel.rachellacey.com/uploads/1/3/0/6/130621108/88fe1.pdf
    • http://imgmfr.com/uploads/1/3/0/6/130639138/zasovotul.pdf
    • http://oldtownpublic.com/uploads/1/3/0/5/130540010/6697641.pdf
    • http://southerncrossland.com/uploads/1/3/0/6/130621301/lawazexe_xadowagafizo.pdf
    • http://www.mcatgent.org/uploads/1/3/0/6/130620828/130620828.html#discuss+the+communicative+approach+to+language+teaching

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113b.bin
8ffd5b4ed11f39bb7fc69f17997730161571b126c127cafd6d79ac78c63d00eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113B 7768 bytes
font_01_sfnt_off00009217.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 16036 bytes

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