Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1152d67a8cbdaee…

MALICIOUS

PDF

37.7 KB Authoring application: PDF Studio
MD5: b1763034fece86f9b7b6f50b814ad219 SHA-1: 319c3d9adc69c0a6837bf7c55dc0620dc01f9da5 SHA-256: d1152d67a8cbdaeeb8b0eca6b34e84539abf6a8ca03a2e7b590838dab1408664
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning and phishing. The document body advertises 'Avg antivirus 2018 crack free', suggesting a lure to download malicious software. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and malicious traffic generation intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://azcarpetinstall.com/uploads/1/3/0/2/130272485/felutajuz_fojarum_jedazojenup.pdf
    • http://chandalinchamplin.net/uploads/1/3/0/4/130477064/8545c3298.pdf
    • http://kimberlysfarmsflowers.com/uploads/1/3/0/4/130478067/nugib-fomop-sisupofujonif-daxavul.pdf
    • http://olgausova.com/uploads/1/3/0/6/130604148/newanujunigemeg_kirotam_bikamoxegizaj_zoxoditufo.pdf
    • http://castlescoins.com/uploads/1/3/0/5/130551463/jekova.pdf
    • http://skylight24.com/uploads/1/3/0/4/130488578/wepilaxasedi_nasidebibu.pdf
    • http://pittsburghyogaexpo.com/uploads/1/3/0/5/130546040/32d6858e246ea.pdf
    • https://patemitom.weebly.com/uploads/1/3/0/2/130289755/vivolowikanuju_xutoligi_xaxojej_tefusuvukiket.pdf
    • http://praxisuccamericusstore.org/uploads/1/3/0/6/130621873/45c610982f9a.pdf
    • http://nqfd.com.au/uploads/1/3/0/4/130435722/5c35638a5a43d.pdf
    • http://emojisaysgame.com/uploads/1/3/0/3/130324011/3160629.pdf
    • http://vicbellbeats.com/uploads/1/3/0/3/130323213/8578173.pdf
    • http://wyomingdha.org/uploads/1/3/0/3/130323789/sojibel.pdf
    • http://somasoakcanada.com/uploads/1/3/0/6/130604368/130604368.html#avg+antivirus+2018+crack+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b3.bin
91fb14dfd87144ab8e3c156fde44db42c0f8d6e2742c0e0346e8acf6792bfbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3 7960 bytes

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