Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ecd9c31852083db…

MALICIOUS

PDF

39.6 KB Authoring application: pdf-parser
MD5: 6c3572f4ae17b91ec5649721fbee2020 SHA-1: 921a8348eb4563c9cf3855e4a016b65632537955 SHA-256: 4ecd9c31852083dbbff7c1fc6cb536c4e83f81e2713554ba63342e885707b48c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. The document body text is heavily corrupted and does not provide further context on the specific lure.

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://johnridleyformayor.net/uploads/1/3/0/6/130621533/xepelumedulikir.pdf
    • http://bearsversusbabies.org/uploads/1/3/0/2/130289224/7862701.pdf
    • http://daygameinthebronx.com/uploads/1/3/0/2/130271002/gabesetota_lopagazixu_warukuku_xekita.pdf
    • http://co-styleconstructions.com/uploads/1/3/0/6/130620957/7374595.pdf
    • http://lwvfairfieldct.org/uploads/1/3/0/4/130483117/5789677.pdf
    • http://affordableinsurancedirect.com/uploads/1/3/0/6/130621665/setuzu-pifivesadeb-povajo.pdf
    • http://madeinvenicefilm.net/uploads/1/3/0/7/130740174/4493107.pdf
    • http://all-ladder-parts.com/uploads/1/3/0/7/130775763/15aa6c246.pdf
    • http://shelleycorr.com/uploads/1/3/0/7/130775201/2559965.pdf
    • http://leafitout.com/uploads/1/3/0/3/130313004/ccb71817890fe.pdf
    • http://brownforillinois.com/uploads/1/3/0/4/130488087/purugu.pdf
    • http://atlbloggers.com/uploads/1/3/0/3/130379311/7753950.pdf
    • http://ellensarkisian.com/uploads/1/3/0/2/130289239/71d3dcbdb7809a.pdf
    • http://blueballs.shop/uploads/1/3/0/3/130313286/eca4509.pdf
    • http://9guides.com/uploads/1/3/0/5/130550711/pofapige-nuvenena-mamemiliwi-sowunonug.pdf
    • http://cpanel.tanradio.net/uploads/1/3/0/4/130488401/dalebo.pdf
    • http://mudassarshah.com/uploads/1/3/0/6/130603832/sepipizowosoxif.pdf
    • http://gameofthronesairdates.com/uploads/1/3/0/4/130492963/6529993.pdf
    • http://www.rockwellhousing.com/uploads/1/3/0/6/130622066/gezovebubebik_buwod_puteko.pdf
    • http://mta-sts.mail.bayanihancc.org/uploads/1/3/0/6/130639983/molejepuwe-wedudomufixora-rejosidelu-dadumezofoxivav.pdf
    • http://christinafriedle.org/uploads/1/3/0/5/130538831/130538831.html#ajcc+thyroid+cancer+staging+2018
    • http://bearsversusbabies.org/uploads/1/3/0/2/130289224/7862701

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038f4.bin
9c67ffd027297378290dcc42d63c6adf00494d53981f41b0c908946445533579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38F4 8680 bytes

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