Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8734f35c8dad1c8…

MALICIOUS

PDF

47.3 KB Authoring application: Nitro PDF First seen: 2020-09-24
MD5: b2e9bba32cc1eec4fbac48d08f9aee2d SHA-1: 54bd6a6dd89d520e89633c2dee80ea8d8155628e SHA-256: f8734f35c8dad1c82c315958d87f1b8f7195b3a1181c6011063c8273180ba324
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall. The document contains a large number of embedded URLs, suggesting a phishing or SEO manipulation attempt. The presence of these links and the heuristic firings indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://duplexdoctor.com/uploads/1/3/0/5/130588490/74bfc17f0a26.pdf In PDF document text
    • http://actingupchildrenstheatre.com/uploads/1/3/0/6/130604127/luzoxiwinekase-dugal-papenopalis-dugiralaberuzo.pdfIn PDF document text
    • http://minimumtread.com/uploads/1/3/0/3/130323199/vuvifumosekevex.pdfIn PDF document text
    • http://ellabelleslime.com/uploads/1/3/0/7/130740556/vevono.pdfIn PDF document text
    • http://4ufurnituredesign.com/uploads/1/3/0/6/130621187/8066406.pdfIn PDF document text
    • http://businessbella.com/uploads/1/3/0/2/130272856/mitize_pofedeb_mataweviv.pdfIn PDF document text
    • http://djtlmusic.com/uploads/1/3/0/3/130379428/fikevopukoz.pdfIn PDF document text
    • http://nipmucprincipal.com/uploads/1/3/0/6/130620574/ragajuwiranez_gijiwojur_kikaruwezuluji_mofebadik.pdfIn PDF document text
    • http://ankabhi.org/uploads/1/3/0/3/130313194/1870989.pdfIn PDF document text
    • http://iweargreatness.com/uploads/1/3/0/3/130379138/130379138.html#icd+10+code+for+cubital+tunnel+syndromeIn 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_off00001272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1272 8116 bytes
SHA-256: f425ba88ddddcfcf8eaeeed8e94a616536e136a87985de4432fde8e284570726
font_01_sfnt_off00007e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E88 2652 bytes
SHA-256: 1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838

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