Malicious PDF — malware analysis report

Static analysis result for SHA-256 058cb4dcf08ca273…

MALICIOUS

PDF

35.6 KB Authoring application: Nitro PDF
MD5: 7fb7dd44decf57b8d175936e1bd33d65 SHA-1: b48436b9ef8952ea4fd7cea8ed6511350e666df2 SHA-256: 058cb4dcf08ca2738c94bc30bb0d6f86521f75ac0557b05f08482ab925b0413f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://rnbkennel.com/uploads/1/3/0/4/130490181/8336252.pdf
    • http://lerevepianos.com/uploads/1/3/0/5/130551488/bololozezajorup.pdf
    • http://vipiski-besplatno12.icu/uploads/2020/01/28/dubepawojijoza-gifenivuniku.pdf
    • http://nusgss.org/uploads/1/3/0/4/130476144/2154025.pdf
    • http://allthings-change.com/uploads/1/3/0/3/130379069/xumenisu_fetavok.pdf
    • https://dewoluguf.weebly.com/uploads/1/3/0/5/130588463/bunavaxexafibub.pdf
    • http://advanceproductservices.com/uploads/1/3/0/5/130588493/2346646.pdf
    • https://kometizo.weebly.com/uploads/1/3/0/4/130476541/nusiga-jojamubugopofeg-xilezu-tiketeriwafa.pdf
    • http://nativelabjp.com/uploads/1/3/0/4/130483134/5846479.pdf
    • http://bicyclexplorers.com/uploads/1/3/0/5/130544734/7602186.pdf
    • http://mycoloradoorthodontist.com/uploads/1/3/0/6/130620783/b962f24aceb6.pdf
    • http://noebrown.com/uploads/1/3/0/4/130477533/gekemojugopibopepo.pdf
    • http://obgynassociatespc.com/uploads/1/3/0/2/130272421/fcd2768.pdf
    • http://bariatricsinc.com/uploads/1/3/0/3/130323186/2507923.pdf
    • http://envt225malta2019.com/uploads/1/3/0/6/130604778/kofotuv.pdf
    • http://pesiku.2bratika.ru/uploads/2020/01/29/1c97624f1.pdf
    • http://witlearrit.pro/uploads/2020/01/28/noxekamiloned.pdf
    • http://created4youfoods.com/uploads/1/3/0/6/130620407/jabes.pdf
    • http://redwoodcoastaccounting.com/uploads/1/3/0/6/130620613/sazosikibif-nanekobatopix-rubos-tilaxidesag.pdf
    • http://misbailes.com/uploads/1/3/0/5/130550834/130550834.html#rowdy+baby+videos+songs+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015cc.bin
1a1c4c39b983ac3a83f04c9e2b4b5765ba31517615928b07bd89c21af92b6de7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CC 8324 bytes

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