Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53675c9b780300a…

MALICIOUS

PDF

41.5 KB Authoring application: ImageMagick First seen: 2020-09-24
MD5: d06067bd80adca2caf2622e20dc54c74 SHA-1: 404076d6d14a760ee4502725c905bc32c4d0056d SHA-256: c53675c9b780300ad00bddd0eda953ad5c4cdfad037b442077ae174380057366
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO spam campaign. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with the first observed URL being http://brunostippe.com/uploads/1/3/0/6/130605146/siwerobesidanoluxen.pdf. The document body contains garbled text and what appear to be educational or technical questions, likely as a lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://brunostippe.com/uploads/1/3/0/6/130605146/siwerobesidanoluxen.pdf In PDF document text
    • http://xiomana.shop/uploads/1/3/0/5/130539820/vomexinunut.pdfIn PDF document text
    • http://abmcilwaincpa.com/uploads/1/3/0/2/130287521/rokifufusirovave.pdfIn PDF document text
    • http://breadoffrance.com/uploads/1/3/0/7/130775710/6648485.pdfIn PDF document text
    • http://ellacart.com/uploads/1/3/0/5/130589145/pawokuguwi_relojitinafib_nipunelakeba_deguzagivedume.pdfIn PDF document text
    • http://cseyewear.net/uploads/1/3/0/4/130476146/tinomigarubud_rojetorixe_misekeb_bosizazivuno.pdfIn PDF document text
    • http://treeoflifecg.com/uploads/1/3/0/3/130323355/2904579.pdfIn PDF document text
    • http://www.damonoscar.com/uploads/1/3/0/8/130874635/9c00c35ec725f.pdfIn PDF document text
    • http://namastamyoga.com/uploads/1/3/0/5/130539370/353a210d770e192.pdfIn PDF document text
    • http://paretonutrition.org/uploads/1/3/0/7/130740183/subawozigogetu-dipezijikun-vazapudi-gibog.pdfIn PDF document text
    • http://luckysquash.com/uploads/1/3/0/8/130814328/xunuwase_xawojut_jamufup_sawevipoke.pdfIn PDF document text
    • http://mmcarterconsult.com/uploads/1/3/0/2/130287930/juwuwepame_wereturigupival.pdfIn PDF document text
    • http://www.arielledollinger.com/uploads/1/3/0/5/130590296/3813268.pdfIn PDF document text
    • http://www.yamayogacollective.com/uploads/1/3/0/5/130551127/855f9.pdfIn PDF document text
    • http://huanjiangpindeqipaiyouxi.br3h.com/uploads/1/3/0/6/130605433/130605433.html#which+of+the+following+statements+concerning+the+acid+strength+of+carboxylic+acids+is+correctIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2443 8928 bytes
SHA-256: 8c13508c47c213c0a718e7b2754abffa161ea08a367afbfff1300c81e0bf2831
font_01_sfnt_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea