Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5657d7b90b914f…

MALICIOUS

PDF

34.4 KB Authoring application: OpenOffice Draw
MD5: d20a9c497ac7dfd1bdecea6adf290337 SHA-1: 55eb94ce79435bdf8609feb06577f1e8b0f50a2d SHA-256: af5657d7b90b914f22b2d5266426ae585cbe89250b0baf2f84b1f3e6c7869904
150 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, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. The embedded URLs are the primary indicators of compromise, pointing to potentially malicious content hosted on various domains.

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 http://pem.trysiki.ru/uploads/2020/01/28/5951612.pdf
    • http://aaagospelminister.com/uploads/1/3/0/5/130590257/8096001.pdf
    • http://petrinaburkard.weebly.com/uploads/1/3/0/4/130488163/tapirija.pdf
    • http://tidojigaro.vet77.ru/uploads/2020/01/27/lupojofakabi.pdf
    • http://zisuxux.telenovelasgratis.biz/uploads/2020/01/27/tefuran_vivujuxajoki_nurosizewivopil.pdf
    • http://xukuzema.lzsx.online/uploads/2020/01/28/5685185.pdf
    • http://vipdating.icu/uploads/2020/01/28/disaxezamupuzapumira.pdf
    • http://scalesexoticpets.com/uploads/1/3/0/6/130621135/01ccca5.pdf
    • https://tifiputoberek.weebly.com/uploads/1/3/0/5/130550890/kuret.pdf
    • http://sup.ladies.wine/uploads/2020/01/28/4495047.pdf
    • https://xezududizuj.weebly.com/uploads/1/3/0/5/130588548/zodurokesuxixa-goxoganuwefati.pdf
    • http://tofufesitu.audiostart41.icu/uploads/2020/01/27/7710537.pdf
    • http://delectableeatsandtreats.com/uploads/1/3/0/6/130605048/femosigasupifakabole.pdf
    • http://kiw.urogorod.ru/uploads/2020/01/27/fonarur.pdf
    • http://datow.finresult.com/uploads/2020/01/28/4150482.pdf
    • http://antiqueitcandles.com/uploads/1/3/0/6/130605440/fd7fefd29a65.pdf
    • http://middleschoollessons.com/uploads/1/3/0/5/130590296/f855465721d.pdf
    • http://boeterentenederland.com/uploads/1/3/0/4/130435835/98f84264869.pdf
    • http://alanajanebrows.com/uploads/1/3/0/5/130590019/8e34bf66fe013e.pdf
    • http://gofaviga.blendsa.com/uploads/2020/01/29/faraveso_xebiwutapara.pdf
    • http://strayashop.com/uploads/1/3/0/2/130291531/wamir.pdf
    • http://mikeintucson.com/uploads/1/3/0/2/130289204/130289204.html#spring+framework+tutorial+pdf+ebook

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015d8.bin
dd26221143e45c57d4e1f06eb140942450c59350b12dec474add188b0c403d6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x15D8 7928 bytes