Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e6b5d16369621a…

MALICIOUS

PDF

74.2 KB Authoring application: PDFedit First seen: 2020-09-24
MD5: 098831cbf94f58484aaae4c000dc6caa SHA-1: 9681346ce9e29289905779d2abfdda2b7b5926fc SHA-256: 54e6b5d16369621a59c9c4821396bcd814239dbd5dd92eebb7f42e2ab86649c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate a phishing or malicious download attempt. The presence of a visual download button further supports this. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cassiecares.org/uploads/1/3/0/5/130590673/0b55044a73d2bb3.pdf In PDF document text
    • http://bcssummerlanguagecamp.com/uploads/1/3/0/7/130776847/suvigajezu-netatovopoze-gotum.pdfIn PDF document text
    • http://mondodeldrone.com/uploads/1/3/0/7/130739539/7ca356fdac0ae.pdfIn PDF document text
    • http://somethingsithoughtatthetime.com/uploads/1/3/0/4/130488696/6599824.pdfIn PDF document text
    • http://bitwiseapps.com/uploads/1/3/0/2/130289799/5218012.pdfIn PDF document text
    • http://mindforyou.org/uploads/1/3/0/4/130483886/130483886.html#spoken+english+book+pdf+download+in+hindiIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: cairobritishcollege.com 18 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000110d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D 8836 bytes
SHA-256: 08d2f902f915a7fdf4535f50206b028ac5683af5a80f89dd81a23f6a80898411
font_01_sfnt_off0000a19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA19C 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_02_sfnt_off0000ac56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC56 19432 bytes
SHA-256: 4b23c31a69dfa1c755fb975095bde3d50f341d06b9f7ff6954e3487ce50abb3e
font_03_sfnt_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 16092 bytes
SHA-256: 406773549559360a7f4609cba7635045f4fc43af2cca6a6bae31ca6dbb98e8fe

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