Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa3b32bf2a2ddf1…

MALICIOUS

PDF

37.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 783bba7bb52326ed0d3d18db8cf924c5 SHA-1: 7e1fe5d43ff0a67be8f9f8127cb97cd02db3d7da SHA-256: 4fa3b32bf2a2ddf13b4e36b621973a4165f9af0d9e1504f87ac4edf753aab3c9
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The primary attack pattern involves directing users to a vast collection of external PDF files, likely for SEO poisoning or to distribute additional malware. No scripts were extracted from this sample.

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://nashbw.info/uploads/1/3/0/6/130640049/resif_lubikovaka.pdf
    • http://l-m-s-u.com/uploads/1/3/0/2/130287973/9e1a8f152161e85.pdf
    • http://www.jessicasellsolyhomes.com/uploads/1/3/0/4/130475981/80c17467724207.pdf
    • http://www.hollanobingerbooks.com/uploads/1/3/0/7/130775760/labepewu.pdf
    • http://agtco.net/uploads/1/3/0/6/130639092/doxagix.pdf
    • http://modestomasonry.com/uploads/1/3/0/5/130544089/533f681.pdf
    • http://verifiedoverviws.com/uploads/1/3/0/6/130620847/7813723.pdf
    • http://daryeelhomecare.com/uploads/1/3/0/7/130738972/2308258.pdf
    • http://winegiftboxes.net/uploads/1/3/0/5/130588942/1908112.pdf
    • http://bayislandsoapco.com/uploads/1/3/0/7/130739232/vosofexopi.pdf
    • http://northwestembroidery.net/uploads/1/3/0/8/130814763/fagana_jominawawi.pdf
    • http://www.annefischler.com/uploads/1/3/0/6/130621015/586550.pdf
    • http://my-cwb.com/uploads/1/3/0/2/130288326/8720001.pdf
    • http://mcilquham.net/uploads/1/3/0/4/130488299/gagelujomejuzuf.pdf
    • http://mylocalcfo.gammaxiques.org/uploads/1/3/0/8/130814402/130814402.html#quadratic+formula+solver+python

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000037dc.bin
3928fa64e57003795f7d42f0c05bb6656a7df4b7aae874bda68529d83ead0889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37DC 8760 bytes

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