Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb564bf9bc3d3ab4…

MALICIOUS

PDF

42.1 KB Authoring application: Karbon
MD5: d4b7196c36b637bf9654f53f972e4a7a SHA-1: fdf57d47f18dd7e8c24402c253d373bf6c8c46cb SHA-256: fb564bf9bc3d3ab4264f3393cb694b63045aab83a34dbdeee6c8fdaea7ba1828
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm containing 21 external PDF links, and a ClamAV detection for Pdf.Phishing.TtraffRobotInstall. The ML classifier also assigned a very high probability of maliciousness. The embedded URLs suggest a phishing or traffic-driving campaign, where users are likely lured to download further malicious content or provide sensitive information.

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://agenkastam.com/uploads/1/3/0/4/130483820/lirurawuvunek_tuvekinatarasow_lonelorumil.pdf
    • http://blurbfactory.net/uploads/1/3/0/4/130479472/jominata.pdf
    • http://canadianly.com/uploads/1/3/0/5/130589122/2698971.pdf
    • http://totalaccesssolutionsltd.com/uploads/1/3/0/5/130551745/jidenepesuge.pdf
    • http://www.tastybakerygrahamnc.com/uploads/1/3/0/6/130603888/venuwuv_nelipe_leweseverixom_vefusefomoz.pdf
    • http://simplypleasantsquared.com/uploads/1/3/0/7/130738819/zirev_fozukaxupi_varej.pdf
    • http://ofwinitiative.com/uploads/1/3/0/7/130776367/mofawuge-pelokenorodad-jeposijinizik-rizututuf.pdf
    • http://rak12library.org/uploads/1/3/0/5/130550789/bitekutexifoturumem.pdf
    • http://millscountychamber.com/uploads/1/3/0/7/130740242/leveduziwirusozul.pdf
    • http://boiusa.net/uploads/1/3/0/5/130588579/fuzabosabinuvasazare.pdf
    • http://ravenacademy.org/uploads/1/3/0/4/130488198/rixujuwepefuxupus.pdf
    • http://nikkosbread.com/uploads/1/3/0/6/130603946/libis-jeduj-pabogofasijid-risubusuxagug.pdf
    • http://savcalgary.com/uploads/1/3/0/3/130323765/b527d89f24ab07.pdf
    • http://awenindependentarts.com/uploads/1/3/0/7/130776801/zixonesevivotem.pdf
    • http://www.godofdreams.com/uploads/1/3/0/7/130775476/1184019.pdf
    • http://bestforexrebates.com/uploads/1/3/0/8/130874504/fozawikukafuxa.pdf
    • http://mobilebillboardsredwoodcity.com/uploads/1/3/0/6/130622033/8658558.pdf
    • http://naturalgasrefusetrucks.net/uploads/1/3/0/2/130288534/883e1c622318325.pdf
    • http://rrerealtyservices.com/uploads/1/3/0/2/130291822/wemivevemagugaw.pdf
    • http://janestrombolis.com/uploads/1/3/0/3/130379274/6261120.pdf
    • http://thingsome.com/uploads/1/3/0/7/130776607/7793205.pdf
    • http://olddominionsausage.gammaxiques.org/uploads/1/3/0/6/130604006/130604006.html#transverse+mercator+projection+advantages+and+disadvantages

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000437c.bin
afe9168477dace9414ee4f78bd0384752980fce4a876bed22ae1d4ebc3a804c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x437C 8048 bytes

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