Malicious PDF — malware analysis report

Static analysis result for SHA-256 81a7f87da5139946…

MALICIOUS

PDF

38.8 KB Authoring application: LibreOffice Draw
MD5: 4e3b5a186763e6d80d053613f7bf4f50 SHA-1: a66b9700b57f1712cceffb47e775d2301e5342df SHA-256: 81a7f87da5139946292120ea0eddc21e5a4a657ee5262c76b61ddac5fdac2149
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO spam or to distribute malware. The ClamAV heuristic 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate a phishing or malicious link distribution campaign. The primary URL identified is http://experienceperfectwindows.com/uploads/1/3/0/5/130590400/f46147ef.pdf.

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://experienceperfectwindows.com/uploads/1/3/0/5/130590400/f46147ef.pdf
    • https://bipidutir.weebly.com/uploads/1/3/0/5/130588620/d139b5c12c7c.pdf
    • http://ramufa.onemagazin.ru/uploads/2020/01/28/wafojujetilodo.pdf
    • http://futabiv.evroplast92.ru/uploads/2020/01/27/kuzuxomerepep.pdf
    • http://sew.freepubg.shop/uploads/2020/01/28/wiwirur.pdf
    • http://win.graf-von-eichendorff.online/uploads/2020/01/28/323c0752cf4.pdf
    • http://lilubeauty.com/uploads/1/3/0/4/130483842/7671175.pdf
    • https://kisozebiduz.weebly.com/uploads/1/3/0/5/130589019/3568008.pdf
    • https://rafapabofog.weebly.com/uploads/1/3/0/5/130590420/jitala_samusajokaf_lijekijadam_detefatumuwoxe.pdf
    • http://nigewofok.almet-centr.ru/uploads/2020/01/28/4089011.pdf
    • https://rativoneku.weebly.com/uploads/1/3/0/2/130287495/a1ec35b86d.pdf
    • http://rickgillammobileservice.com/uploads/1/3/0/6/130620549/68648.pdf
    • http://vowuvu.krokus-avto.ru/uploads/2020/01/28/jifebuzovarurunuj.pdf
    • http://jag.cmb-contact.com/uploads/2020/01/27/b9b71bf2f8.pdf
    • http://zowegub.propiedadesfibrastextiles.com/uploads/2020/01/27/1321872.pdf
    • http://gotu.angrybirds.tech/uploads/2020/01/27/faf157d7.pdf
    • http://hamptonsbailbonds.com/uploads/1/3/0/3/130323936/borukedetomizod-fililuduruv-nowovorelupiv-nukozuxoxakebor.pdf
    • http://jinig.good-robot.ru/uploads/2020/01/29/tewun_funeju_jedobef_visetog.pdf
    • http://speacetech.us/uploads/2020/01/28/561d2a6ab6f.pdf
    • https://rimenanamor.weebly.com/uploads/1/3/0/2/130289448/gudamol.pdf
    • https://sadumodu.weebly.com/uploads/1/3/0/4/130488331/folejuxajenev_bowut_wulesetufebutes.pdf
    • http://vehicleloanusa.com/uploads/1/3/0/5/130543472/1a6491.pdf
    • http://xegaxuzinu.tkantares.ru/uploads/2020/01/27/33d67d19.pdf
    • http://cafeconyoga.com/uploads/1/3/0/6/130604230/f73b9.pdf
    • https://vifixevefigewux.weebly.com/uploads/1/3/0/4/130489564/pimibuxaralik.pdf
    • http://varsitygreekstore.com/uploads/1/3/0/5/130545884/130545884.html#counter+strike+1.+5+ekran+b%C3%BCy%C3%BCtme

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000019fe.bin
85a2ca91145e6a56f3cc044e947c11080e5417f2675c9c38c2d7700eef30ee84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19FE 9592 bytes

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