Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b03ca679bb91ae2…

MALICIOUS

PDF

36.2 KB Authoring application: Karbon
MD5: 14bbaa72f0cd5a68ac8931a8062df810 SHA-1: d47358381a81951a897b6107dda592121f836464 SHA-256: 7b03ca679bb91ae24e535370f429bdfd3b0acc0054e651be5659a057d785d14b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and a machine learning classifier, for malicious content. The PDF_SEO_LINK_FARM heuristic identified a mass of external PDF links, with the first being http://miniturecowboysrus.com/uploads/1/3/0/7/130775710/vapujulifixevig.pdf. This suggests the document is designed to lure users to potentially malicious or phishing content hosted on numerous domains.

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://miniturecowboysrus.com/uploads/1/3/0/7/130775710/vapujulifixevig.pdf
    • http://pistachiosmae.com/uploads/1/3/0/6/130639136/39ca0.pdf
    • http://alexpepstein.com/uploads/1/3/0/2/130288465/4324586.pdf
    • http://neverstripaflooragain.com/uploads/1/3/0/2/130271157/sixokizatus_xalekibotuvofo.pdf
    • http://buyerstreasure.com/uploads/1/3/0/6/130639995/d2abb75db343f.pdf
    • http://codermonthly.com/uploads/1/3/0/7/130739678/sexatiresaseloj_xalilinevoz_mebuwikafalaniz.pdf
    • http://amanziqs.co.za/uploads/1/3/0/4/130476611/cd850eb1af3a2.pdf
    • http://www.campbell-france.com/uploads/1/3/0/6/130640114/5e98d.pdf
    • http://horn-comb.com/uploads/1/3/0/3/130323210/4633372.pdf
    • http://lilahodges.com/uploads/1/3/0/7/130776873/rukitomusux.pdf
    • http://powerofproton3.website/uploads/1/3/0/5/130550955/aa3bcce71.pdf
    • http://satellitesessionsmusic.com.au/uploads/1/3/0/3/130324419/zogote-monadefavanaw-netigu-mozinivabe.pdf
    • http://roxiesfunko.net/uploads/1/3/0/3/130323707/c03d46.pdf
    • http://notesfromearth.co.uk/uploads/1/3/0/4/130488320/sikis_fubonibuv_joweluvev.pdf
    • http://smaese.com/uploads/1/3/0/7/130775725/xerivu-fizoloxu-managerisilemo.pdf
    • http://www.cloud.sentinel-air.com/uploads/1/3/0/7/130739656/130739656.html#pathogenic+avian+influenza+virus

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003261.bin
cfbcbf626c8cc0e847b5ec698d00269ef726b84957cfeba89fb48a1b883b8c79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3261 7948 bytes

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