Malicious PDF — malware analysis report

Static analysis result for SHA-256 040d942cccd493cc…

MALICIOUS

PDF

86.3 KB Authoring application: Solid Converter PDF
MD5: 73c5d89b6a15a00cd605d2ec59f81032 SHA-1: 4dfb77a3935cbaa3b294142d30ef7d4e78d4a4ce SHA-256: 040d942cccd493cc70267ce5fb119a334f5129cc38545de03a8581c37e92217b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a PDF_SEO_LINK_FARM heuristic, suggesting a tactic to drive traffic to potentially malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing-related. While no scripts were directly extracted, the nature of the embedded links and the detection results point towards a phishing or SEO manipulation campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://samsungrepaircenter.net/uploads/1/3/0/4/130488970/5050047.pdf
    • http://vigilanttool.com/uploads/1/3/0/4/130435966/xagolezomo.pdf
    • http://veterinarybi.com/uploads/1/3/0/6/130620878/4538516.pdf
    • http://mybathbuddy.com/uploads/1/3/0/4/130435503/korawuvim-wikamawefa-kozudaxop-vijizif.pdf
    • http://drfirillo.com/uploads/1/3/0/6/130639854/xekalomosejixarepate.pdf
    • http://behdaar.net/uploads/1/3/0/7/130739974/totowogemugo.pdf
    • http://mediumtelefoon.com/uploads/1/3/0/8/130813428/be780.pdf
    • http://trinitykalispell.com/uploads/1/3/0/3/130379529/raxevunitet-votakabafopup-bawimoputulol-lelizunote.pdf
    • http://redriverministries.org/uploads/1/3/0/5/130545884/3373354.pdf
    • http://empire23.com/uploads/1/3/0/8/130873856/nixanutegawinub.pdf
    • http://zombiegirlderby.com/uploads/1/3/0/6/130621425/af230.pdf
    • http://www.ipromiseglobal.com/uploads/1/3/0/6/130622011/jizesumeweriluv.pdf
    • http://www.washingtontwpparks.com/uploads/1/3/0/4/130488199/6e19c.pdf
    • http://michelle-endoflifedoula.com/uploads/1/3/0/2/130289244/695583.pdf
    • http://guardioesdeluz.com/uploads/1/3/0/7/130739419/duwifajakejexewez.pdf
    • http://heuristicsystems.net/uploads/1/3/0/6/130621349/8752730.pdf
    • http://pierrealainchabot.com/uploads/1/3/0/5/130551718/d11786a35bc553.pdf
    • http://traveltyme.voyagerwebsites.com/uploads/1/3/0/4/130476322/130476322.html#beta2+adrenergic+receptor
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003316.bin
8154cf9c04a722c4a88c2f2ef721d9eb30e7d742b09ad0942f97f35eb6923ce7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3316 11108 bytes
font_01_sfnt_off0001037f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1037F 16036 bytes
font_02_sfnt_off000117a4.bin
4e9ae17c41f053e7ad2cff4c16f4465db96732130fdde230725ded2fe80853ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117A4 3156 bytes

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