Malicious PDF — malware analysis report

Static analysis result for SHA-256 824719cfb2219258…

MALICIOUS

PDF

41.1 KB Authoring application: GIMP
MD5: 58d873354be0060da95f7212f0771a6e SHA-1: 62fbb7adb0d5e7712dfd04649c90a6f1f4496624 SHA-256: 824719cfb2219258864eb15ec833ed6a5dfd3a6febb1e3f6d6f9f9f2115fdb3c
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a PDF link farm, containing 31 external links. The embedded URLs, such as http://brundlethwaite.com/uploads/1/3/0/2/130288412/kupupiz.pdf, are likely used to redirect users to malicious sites. This pattern is consistent with phishing or malware distribution campaigns aiming to lure victims through a large number of seemingly legitimate, yet ultimately harmful, links.

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://brundlethwaite.com/uploads/1/3/0/2/130288412/kupupiz.pdf
    • http://ninktat.com/uploads/1/3/0/6/130620370/tisewifisavuro.pdf
    • http://viverofloresdelperu.com/uploads/1/3/0/6/130605133/funapuga.pdf
    • http://vovisologe.kowls.xyz/uploads/2020/01/27/wovelaju-fivuxufeku.pdf
    • http://jinig.good-robot.ru/uploads/2020/01/27/gobafijugigesod.pdf
    • http://pamuzeda.knvanna.ru/uploads/2020/01/27/96261bcdd75.pdf
    • http://jemuwax.ewrty.xyz/uploads/2020/01/28/7b86d1a5d9871.pdf
    • https://getuforuz.weebly.com/uploads/1/3/0/4/130483445/1481384.pdf
    • http://cafemostik.com/uploads/2020/01/28/xorivalatiku.pdf
    • http://alldolledup-dollclothes.com/uploads/1/3/0/5/130544823/jamogoxo_neturozexu.pdf
    • http://tarprail.weebly.com/uploads/1/3/0/4/130489563/nikunigatukofa.pdf
    • http://k-ortiz-portfolio.com/uploads/1/3/0/5/130588810/wikemasis_laretozufedaxej.pdf
    • http://osmosistours.com/uploads/1/3/0/5/130589444/taxaf_xenofeza_luwizanumi.pdf
    • http://maisfutebol.online/uploads/2020/01/29/3288743.pdf
    • http://nysmaplepartridge.com/uploads/1/3/0/4/130478295/29b736e9.pdf
    • http://80design.studio/uploads/1/3/0/6/130621523/kigagajilajuka.pdf
    • http://xotis.garden-centr.ru/uploads/2020/01/28/gumamubifamusiraw.pdf
    • http://milwaukeesfavoritedj.com/uploads/1/3/0/4/130483902/657665aeb.pdf
    • http://pameladirnberger.com/uploads/1/3/0/2/130289694/130289694.html#logical+data+model+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001518.bin
1ff0eec082fe0ba4b14c1fbe1c6c2c858648e1ca65d1ed365fcb899fba8391c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1518 7964 bytes

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