Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7f5eebd55ca0ef…

MALICIOUS

PDF

39.3 KB Authoring application: Poppler-utils
MD5: 1a582b0a48bf88f682ab2740e9b09677 SHA-1: 83c72d1956a30bf8b9a5f55be8bd2aa4a9595e37 SHA-256: af7f5eebd55ca0eff90282e6a930b537c6d88c94448e3deb867d2e791caba533
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URLs likely lead to further malicious content or phishing sites, and the document body, though heavily corrupted, contains fragments related to medical topics, potentially as a lure.

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://brickalation.com.au/uploads/1/3/0/4/130476276/b1797cc8861e4.pdf
    • http://northenddeli.com/uploads/1/3/0/6/130620793/dokujowuzuwoxiz.pdf
    • http://troop115.com/uploads/1/3/0/6/130605331/kisivukade_puxegorevixam_nabifofupev_xepebasevub.pdf
    • http://moobesity.com/uploads/1/3/0/4/130435553/3847200.pdf
    • http://waea.net/uploads/1/3/0/2/130289385/mivonaja.pdf
    • http://mindbodymovementarts.com/uploads/1/3/0/2/130291822/fifegisetujimid.pdf
    • http://askthetutor.ca/uploads/1/3/0/2/130287934/jolotokas.pdf
    • http://scireinke.com/uploads/1/3/0/5/130544136/0d79b12d31350ae.pdf
    • http://mworhestra.com/uploads/1/3/0/5/130538946/b6a37a3111a7b.pdf
    • http://intermountainart.com/uploads/1/3/0/6/130604289/xuputake.pdf
    • http://perplexion.net/uploads/1/3/0/7/130776239/5175a808884c.pdf
    • http://pgeastsundayschool.com/uploads/1/3/0/3/130313072/fc59606.pdf
    • http://protalis.com/uploads/1/3/0/6/130604279/gegosi.pdf
    • http://edcollaborations.org/uploads/1/3/0/3/130323928/senumiwodokek-rozakiwadeve-vepeb-torej.pdf
    • http://dryerbeats.com/uploads/1/3/0/4/130435784/e29e84.pdf
    • http://mosquee-alforqane-lille.com/uploads/1/3/0/3/130379347/benesara_mezopekoxudi_wuxafozosopazud.pdf
    • http://nycbicycles.online/uploads/1/3/0/5/130590467/xaxozazenifuzed.pdf
    • http://drzimmermann.org/uploads/1/3/0/4/130475982/xolapamagosos.pdf
    • http://elateyoga.org/uploads/1/3/0/3/130379798/04dd02e6cbfa0.pdf
    • http://mrshandyman.net/uploads/1/3/0/5/130548039/3288684.pdf
    • http://auntkates.com/uploads/1/3/0/6/130604413/3852956aa5812.pdf
    • http://celebratinggodscreation.org/uploads/1/3/0/6/130620736/19f7c3a22c7a.pdf
    • http://11.bpmtc.com/uploads/1/3/0/6/130621686/130621686.html#placenta+previa+totalis+pathophysiology
    • http://dryerbeats.com/uploads/1/3/0/4/130435784

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003851.bin
7a6f88ee54f4b9e3ecd8009316f5c0dbc1d33f2a5d0b9c2aaff882e06bfa286e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3851 8388 bytes

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