Malicious PDF — malware analysis report

Static analysis result for SHA-256 44214bdaf6316426…

MALICIOUS

PDF

39.6 KB Authoring application: LibreOffice
MD5: dbfe6d6a122d080bdc6fdf39698fa979 SHA-1: ac961f8edc963c911c6cf012c63b5d1fa3a8b1e7 SHA-256: 44214bdaf6316426130e22db666f165913967553519554ef56893a01a7d90796
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of external links, a technique commonly used for SEO poisoning to drive traffic to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier further support its malicious nature. The embedded URLs are the primary indicators of compromise, likely leading to further malware delivery or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 https://felatuvumeli.weebly.com/uploads/1/3/0/4/130483868/xumavaxis.pdf
    • http://xenazig.gk-absolutstroy.ru/uploads/2020/01/28/6e56af04c721d40.pdf
    • https://vijoniritesowe.weebly.com/uploads/1/3/0/5/130540280/wagojejew-wuvegatinatabi.pdf
    • http://zugapipu.aksenovaphoto.com/uploads/2020/01/28/8694248.pdf
    • http://fadi.okfabric.ru/uploads/2020/01/28/9665357.pdf
    • https://vunofutub.weebly.com/uploads/1/3/0/4/130488345/361addffad.pdf
    • https://gowenejenupo.weebly.com/uploads/1/3/0/5/130588272/powejipidexuvun.pdf
    • http://xuw.sellercentral-amazon-avs.com/uploads/2020/01/27/boxapu.pdf
    • http://juz.ars-shipping.com/uploads/2020/01/28/6a3996d3c.pdf
    • http://muvig.dymok-vl.ru/uploads/2020/01/28/tapabijufa.pdf
    • http://pizaxewugu.acces-agicoles.com/uploads/2020/01/28/38e0c469f1.pdf
    • http://nedo.theoldde.com/uploads/2020/01/27/89230277eeb1b1c.pdf
    • http://kuhni-msc07.icu/uploads/2020/01/27/mifujop.pdf
    • https://jagewawesatu.weebly.com/uploads/1/3/0/2/130289460/97b200a20961c.pdf
    • https://sozipimidu.weebly.com/uploads/1/3/0/3/130323601/sezaf.pdf
    • http://jowi.befun.xyz/uploads/2020/01/27/33ec9939af6e56.pdf
    • http://stephmatarazzo.com/uploads/1/3/0/2/130287547/130287547.html#fl+studio+12+reg+key+zip

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001574.bin
d098e91bf4c0f75c2f8fb66a330548091b51301733f077c2e7687c5a2d9d27c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1574 10564 bytes

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