Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f70575aabd416c8…

MALICIOUS

PDF

48.0 KB Authoring application: Smallpdf Desktop
MD5: a0a2336a7c243697afaf523f4cac7182 SHA-1: dc62277da796149b2894b85d92765b09321d0f80 SHA-256: 1f70575aabd416c8ee6731c4e50e21393975ffd49011d22b17f0cce29df8116a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files hosted on various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier strongly indicate malicious intent. The embedded URLs are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jillelliott.photography/uploads/1/3/0/2/130270831/welelawexumiso.pdf
    • http://joycrownedproducts.com/uploads/1/3/0/4/130435835/c2075e1bba2bde.pdf
    • https://zawexosuzab.weebly.com/uploads/1/3/0/5/130588583/4975389.pdf
    • http://fumebepuk.faithmirror.com/uploads/2020/01/28/nalofupoxitizozazod.pdf
    • http://melikset.ru/uploads/2020/01/29/1024062.pdf
    • http://xylitogum.net/uploads/1/3/0/5/130538950/adbacdcc53004.pdf
    • http://nabeelreviews.com/uploads/1/3/0/2/130289729/4343158.pdf
    • http://blast-man.com/uploads/1/3/0/5/130542692/gawipuzazam-dumonedowoxo-metosetepewu.pdf
    • https://nodikaro.weebly.com/uploads/1/3/0/4/130488141/dusok-daxixa-voxenafinu-mozetumo.pdf
    • http://jug.provape.ru/uploads/2020/01/28/4459905.pdf
    • https://nibefumax.weebly.com/uploads/1/3/0/2/130273982/nenoboduxok.pdf
    • http://powergeardrums.com/uploads/1/3/0/3/130379311/wefujigef-tujawekogu-daginowepamud.pdf
    • http://thecomputershophv.com/uploads/1/3/0/4/130488476/aeb28ebd00e16c0.pdf
    • http://kbrownmath.weebly.com/uploads/1/3/0/5/130590689/bedemej-rabemu-pumubufejaxuwu-duzov.pdf
    • http://clinicaespacosaudebeleza.net/uploads/1/3/0/5/130551341/muvoze-venufigoso-lekaf.pdf
    • http://soulscriticalpath.com/uploads/1/3/0/4/130489185/6962876.pdf
    • http://nazcamp.org/uploads/1/3/0/5/130546354/ca9a2ab40d8727.pdf
    • http://konrn.com/uploads/1/3/0/6/130620956/wejenibenagopimizar.pdf
    • http://mi-12ventures.com/uploads/1/3/0/6/130639481/xotezefopexisazipo.pdf
    • http://123-give.com/uploads/1/3/0/5/130545745/b57c35c761613.pdf
    • http://mome.mailsens01.online/uploads/2020/01/27/1911858.pdf
    • https://bowatato.weebly.com/uploads/1/3/0/5/130588639/ddd800c3d1b5.pdf
    • http://seasonedservices.com/uploads/1/3/0/6/130604635/viwowofefop-dupomulalol-degopim-kawumuw.pdf
    • http://dimattiadesigns.com/uploads/1/3/0/4/130476432/jizosuzoxom.pdf
    • http://sacredzones.com/uploads/1/3/0/2/130287547/jedaxonexutapij-netudedel-zixiruziwelogo-dapen.pdf
    • http://nobuhotelriyadh-fullsite.devsite-1.com/uploads/1/3/0/6/130620627/130620627.html#sairat+movie++in+tamilrockers
    • http://nazcamp.org/uploads/1/3/0/5/130

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017fe.bin
1e536c22fea83919a1b0f55d3ce1b05f2c80fc83bd073adb07a188fce6974542
pdf-font-stream PDF embedded font (sfnt) at offset 0x17FE 8132 bytes
font_01_sfnt_off000073e1.bin
32b54217619f9438721b423dc2f4f4da0f78781b0811ea49af2be6b0310ecf56
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E1 16164 bytes