Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a3f50ec622ac85f…

MALICIOUS

PDF

42.6 KB Authoring application: PDF Studio
MD5: 1c46fea96649d6f69ff11b2324bd2adb SHA-1: 067c9e1807fd0be2b9c9cb51e40c5a93f088729f SHA-256: 9a3f50ec622ac85f8dba0a4b5e8a14c19a0b027218b803712455fb04c81f5b3d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. This is characteristic of a link farm used to distribute malicious content or engage in SEO spam. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or traffic redirection intent. No scripts were extracted from this sample.

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://adamhilto900eportfolio.com/uploads/1/3/0/3/130323301/mexunowuk.pdf
    • http://skorkredit.com/uploads/1/3/0/5/130539446/viduj-gevugupapusonu-pavaruxe.pdf
    • http://allencabinetshop.com/uploads/1/3/0/4/130436078/9576000.pdf
    • http://charlescc.com/uploads/1/3/0/6/130639865/33faba718d.pdf
    • http://nevrapoint.com/uploads/1/3/0/4/130488163/299202.pdf
    • http://palatka.space/uploads/1/3/0/2/130270887/2666287.pdf
    • http://mtdistrictlwml.com/uploads/1/3/0/7/130776272/9027160.pdf
    • http://christmaspresentstore.net/uploads/1/3/0/2/130270907/zegulufa_zovuvego_sevik.pdf
    • http://mosaicvoices.net/uploads/1/3/0/2/130270966/mumutugazole.pdf
    • http://mountainfestival.org/uploads/1/3/0/7/130776341/sufef-fipewixe-xovexokina-jojezenemofif.pdf
    • http://stalvanjaarsveld.nl/uploads/1/3/0/3/130313422/9528539.pdf
    • http://commongroundsphilly.com/uploads/1/3/0/6/130639588/jifeb-nugonuvarew.pdf
    • http://oakwoodowls.com/uploads/1/3/0/5/130551059/fazojesaxe-redaso-dilagulevaledod.pdf
    • http://bartschcchs.com/uploads/1/3/0/2/130271013/ximuxubimutitez.pdf
    • http://pourspoutmanufacturer.net/uploads/1/3/0/7/130738578/moruzudixovonovone.pdf
    • http://withoutpockets.com/uploads/1/3/0/6/130639269/ecbdb010.pdf
    • http://ttslighting.com/uploads/1/3/0/2/130289638/josepekiwogu-voruz.pdf
    • http://dcsunway.com/uploads/1/3/0/5/130547150/3353062.pdf
    • http://nivramyoga.com/uploads/1/3/0/6/130639561/vobufexodipafa.pdf
    • http://mta-sts.mail.frompapagod.org/uploads/1/3/0/4/130436173/6152655.pdf
    • http://wangshangzhenrenqipai.br3h.com/uploads/1/3/0/7/130775154/130775154.html#chinese+characters+pdf+free+download
    • http://stalvanjaarsve

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302f.bin
d8964b4ef81e00b821d20d533f2a3168040a0451404eccc0f3b90a8a04bc9089		 pdf-font-stream PDF embedded font (sfnt) at offset 0x302F 6820 bytes
font_01_sfnt_off00004847.bin
90a0bea99ceb735332c00e45f43e83929be2400c6c1e0359e5502ead2f357ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4847 7396 bytes

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