Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf32a85c16a92423…

MALICIOUS

PDF

37.4 KB Authoring application: Serif PagePlus
MD5: 820c9c6c03d0c41478c3e68e6dbc229d SHA-1: a67b0566bd573531dd506635f0c1c4430e65b7e6 SHA-256: cf32a85c16a92423263fec84323b2bd1a2cc32be6aa69ee8680ebf57a59f93c5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. No scripts were extracted from this sample, limiting the analysis of its direct execution behavior. The primary attack pattern observed is the mass distribution of links to external resources.

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://www.wanigelawatersecurity.com/uploads/1/3/0/5/130589058/parewojokewawa.pdf
    • http://www.safebeautymovement.org/uploads/1/3/0/4/130483869/jexukep_wabubavifovez_bosak.pdf
    • http://alixxpartners.com/uploads/1/3/0/2/130289238/xibovavaxixa.pdf
    • http://magic-life.com.tw/uploads/1/3/0/2/130291809/bikivemo_vapejalu_letodutal_rudevazerexavos.pdf
    • http://bevinbranlandingham.com/uploads/1/3/0/5/130547340/jobufifi.pdf
    • http://peninsulacopilots.com/uploads/1/3/0/7/130739839/643048.pdf
    • http://clarkeashton.com/uploads/1/3/0/6/130621665/40034cfcd8.pdf
    • http://arleyblack.com/uploads/1/3/0/5/130589125/01c14600c7e.pdf
    • http://hisandherimprovements.com/uploads/1/3/0/7/130740255/c8cf60.pdf
    • http://nomadvapors.net/uploads/1/3/0/7/130775610/8792935.pdf
    • http://aofcorp.com/uploads/1/3/0/4/130476074/zunip.pdf
    • http://careaidecommunity.com/uploads/1/3/0/7/130739726/130739726.html#example+vegetarian+keto+diet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c00.bin
927b88b56a8a08dac47ed9f9669583ab32aa2736349874b5113c17b703a96b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C00 7828 bytes

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