Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9ca0274b8de081…

MALICIOUS

PDF

39.2 KB Authoring application: Adobe PDF Library 9.0
MD5: a56b67799e2dca45dd6baa618551c22d SHA-1: aef81839f6ab7156e2d14f62e8f671ef99d76bf6 SHA-256: fa9ca0274b8de081ee869021c9b3a52ea0338ee0758a91fe24010ec00eacc86f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, a technique commonly used in phishing campaigns to redirect users to malicious websites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate a phishing or malware distribution intent. The ML classifier also flagged this PDF with high confidence. 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://worldwidefactoring.com/uploads/1/3/0/6/130639028/fadowif_nozis.pdf
    • http://sberprize.space/uploads/1/3/0/2/130273899/9943795.pdf
    • http://shreddedveil.com/uploads/1/3/0/4/130488294/4812239.pdf
    • http://johnmappin.org/uploads/1/3/0/6/130620801/74f851121155.pdf
    • http://northcontinent-aviation.net/uploads/1/3/0/7/130738707/8eb502f5d.pdf
    • http://mhevesi.com/uploads/1/3/0/7/130739883/vofuzelopakurijolud.pdf
    • http://sophiashair.com/uploads/1/3/0/2/130273573/befokevos.pdf
    • http://v2.chirogust.be/uploads/1/3/0/7/130740116/kurafesolawi.pdf
    • http://riverdalecommunitycenter.com/uploads/1/3/0/2/130272284/1b84bbd875.pdf
    • http://bacintra.com/uploads/1/3/0/7/130739000/vanaxidusar_mejoduninev_bimakuguw.pdf
    • http://www.hollydays.com.au/uploads/1/3/0/3/130313192/ca2e7b4.pdf
    • http://circlecitytrade.com/uploads/1/3/0/6/130605217/bedubiwix-pirum.pdf
    • http://www.growcapitalfinance.com.au/uploads/1/3/0/6/130639539/fcb9d2b6f716c.pdf
    • http://neuroactiveexercise.com/uploads/1/3/0/2/130287872/dalupipejixadavurix.pdf
    • http://74-123-72-35.mgwnet.com/uploads/1/3/0/4/130476412/130476412.html#e+aadhar+uidai+download

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027a9.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A9 16140 bytes
font_01_sfnt_off00003f62.bin
7cd20b846d2c14316da419d335bcc105a06c024eac1a22ed0c132ba73279c55e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F62 7928 bytes

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