Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11875dda9b8d2d8…

MALICIOUS

PDF

33.5 KB Authoring application: OpenOffice.org
MD5: fe9826e334291ad45be99e9ee1a025d9 SHA-1: 037c5898d336ccc5f9bbbb3bb8e54ce5659662a9 SHA-256: a11875dda9b8d2d85c144320c6a73d085325509b3389543d4126ff4f87438182
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to PDF files hosted on various domains. The heuristic PDF_SEO_LINK_FARM indicates a link farm designed to manipulate search engine results. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further suggests a phishing or malicious intent. The primary IOC is the first external PDF link identified.

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://billoberlander.com/uploads/1/3/0/5/130590682/0d6523db3893e7.pdf
    • https://magewifaxawepo.weebly.com/uploads/1/3/0/6/130604446/faremojitoxilidivon.pdf
    • http://global4xloan.com/uploads/1/3/0/7/130776183/bulogiluwaku_mevofifu_zaxomekeluwedu.pdf
    • http://mrsmacsclass.com/uploads/1/3/0/4/130488410/kanadelafopun_xevebimupa.pdf
    • http://vigrinhotels.com/uploads/1/3/0/4/130477414/1148632.pdf
    • http://codebeforedawn.net/uploads/1/3/0/5/130550814/xijetodemepoxefene.pdf
    • http://rhjerkyoutlet.com/uploads/1/3/0/4/130490314/tonevunoma.pdf
    • http://mylawyerbevin.com/uploads/1/3/0/3/130379158/7938088.pdf
    • http://myentouragemusic.com/uploads/1/3/0/8/130814859/130814859.html#intermediate+accounting+17th+edition+pdf+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e8.bin
2b12feca724f290ca156cc06dec34d0d058612b3f76733b8404e8711cc209112
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8 8184 bytes