Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4bf13acc8d41c6…

MALICIOUS

PDF

53.3 KB Authoring application: OpenOffice Draw
MD5: 6317a674c9611063a9e508ef369bdcf8 SHA-1: d89e9b8ae8f39213c143d7a48582c302e35a360b SHA-256: ec4bf13acc8d41c6c5fc492d510a19408c641aca339de2819c5ac23ed9a171f6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This technique is commonly used for SEO poisoning or phishing campaigns to direct users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent.

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://clearcottonph.com/uploads/1/3/0/3/130313489/7476724.pdf
    • http://workplaemassagetherapy.com/uploads/1/3/0/6/130604838/4f7ea8fb8d.pdf
    • http://mail.florasalon.com.tw/uploads/1/3/0/2/130287278/fovuzevudep.pdf
    • http://rawly.net/uploads/1/3/0/4/130435914/buwuwevaluki.pdf
    • http://pavedlifestyle.com/uploads/1/3/0/4/130436367/liririvanovagifal.pdf
    • http://mta-sts.changingwaves.net/uploads/1/3/0/9/130969170/0bc4685d0e2254b.pdf
    • http://bearsvbabies.org/uploads/1/3/0/6/130622083/2547741.pdf
    • http://langerhomecare.com/uploads/1/3/0/5/130540246/e67364a585de31.pdf
    • http://weirdtoo.com/uploads/1/3/0/5/130539936/87d6fa173dc9.pdf
    • http://blackdogpest.com/uploads/1/3/0/5/130539408/zazafumawov-piwudopenadobuv-zebawofoni-jaxep.pdf
    • http://reellife-music.com/uploads/1/3/0/7/130739871/bifurur-toloxisubir-nerevo.pdf
    • http://www.sporttihetki.net/uploads/1/3/0/6/130605344/130605344.html#insert+copyright+symbol+alt+code

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036c6.bin
1f5b53aebd8bf761f8b8daf2a49b7107badfb3c055d62270f4e8f1c6f036824a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36C6 12700 bytes
font_01_sfnt_off00005c71.bin
28a70530d793708042aa8aa66b7a5dde3098398ab1f74a680ee875d8f07a19d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C71 23556 bytes

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