Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e55666bedff3b8…

MALICIOUS

PDF

32.2 KB Authoring application: PDFBox
MD5: 5541adfbe04e574acc449d20a254e212 SHA-1: a09f9b1c3549a2656d326a6b5d979b84b22514e2 SHA-256: a8e55666bedff3b84c9e4fd9e88c10f1b5f878609510e8a4b74b869136ad6104
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a phishing or malware distribution campaign. The ClamAV detection further confirms its malicious nature. The document body text is largely unreadable due to encoding issues, but the presence of 'Adobe reader 9.1 free download windows 8' suggests a potential lure for users seeking software.

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://fly360green.org/uploads/1/3/0/5/130539645/mijutuderaw_pofedenivedimu.pdf
    • http://paymaat.com/uploads/1/3/0/5/130539265/2616032.pdf
    • http://skylinesjewellery.com/uploads/1/3/0/2/130288864/bofewagawilif.pdf
    • http://memberslog.com/uploads/1/3/0/6/130621213/6de274303b9b1e.pdf
    • http://leftproject.org/uploads/1/3/0/5/130588973/figivuwon.pdf
    • http://adams-aardvarks.com/uploads/1/3/0/2/130272898/zunimukutu-pabowe-dopejapujap-wolog.pdf
    • http://northeastwildernesscompany.com/uploads/1/3/0/8/130873922/159b4e.pdf
    • http://landing.laguiademoda.com/uploads/1/3/0/6/130639038/5159105.pdf
    • http://bestkettlecornever.com/uploads/1/3/0/3/130323513/vozori.pdf
    • http://mogulmeadows.org/uploads/1/3/0/7/130776204/7097913.pdf
    • http://johnnyappleseedofaphasiaawareness.com/uploads/1/3/0/6/130603745/nikifoduvumi.pdf
    • http://gosolar.net.nz/uploads/1/3/0/6/130621202/fobedibidarale.pdf
    • http://murrayparkcondos.com/uploads/1/3/0/4/130483795/7665956.pdf
    • http://onetopshot.site/uploads/1/3/0/7/130740213/wurutomofowifilo.pdf
    • http://newlifeintlmin.org/uploads/1/3/0/5/130589220/407037.pdf
    • http://julfcave.net/uploads/1/3/0/7/130738960/ed87f.pdf
    • http://opiadelaide.com/uploads/1/3/0/4/130476204/panap_ramuvenezelipik.pdf
    • http://mx.stefanaarnio.com/uploads/1/3/0/8/130874121/130874121.html#adobe+reader+9.1+free+download+windows+8

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002238.bin
0941cb952c482ac831c7e4743b26f39013aff04cfdf16e6c03d53e6139aeafa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2238 7496 bytes

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