Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e55a9575fa74c02…

MALICIOUS

PDF

51.0 KB Authoring application: LibreOffice Draw First seen: 2020-09-24
MD5: 14fca7781ac0e5757d53e445878463f5 SHA-1: 82149a395607a43ee73a962378c5b9e7252115fd SHA-256: 7e55a9575fa74c0268a7f7800979ed55e155add960b9d3df165deb9e39f3e33e
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. The document body, though heavily obfuscated, contains references to game downloads, suggesting a lure to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://whackyposts.com/uploads/1/3/0/7/130776428/xazefedunadesata.pdf In PDF document text
    • http://nciba.weebly.com/uploads/1/3/0/6/130604733/637829.pdfIn PDF document text
    • http://ccocciboutique.com/uploads/1/3/0/6/130639889/d6241621efc0.pdfIn PDF document text
    • http://sallysfitnessfortress.com/uploads/1/3/0/4/130477040/sakokaru-wezubu-womud.pdfIn PDF document text
    • https://buduzuxosot.weebly.com/uploads/1/3/0/4/130475925/ac17a7cfb35fba9.pdfIn PDF document text
    • http://rulawusu.getthedriver.com/uploads/2020/01/29/peked.pdfIn PDF document text
    • http://paddleboardz.com/uploads/1/3/0/3/130323092/pukirutor.pdfIn PDF document text
    • http://panc.afaparents.org/uploads/1/3/0/3/130313013/patiweli.pdfIn PDF document text
    • http://incamamas.com/uploads/1/3/0/5/130544703/xuwobixobon_favumapedobuxu.pdfIn PDF document text
    • http://koshercorner.org/uploads/1/3/0/3/130379409/rodeviwot_lapikato_worexuzaw_gunososedeve.pdfIn PDF document text
    • http://allergy.mediutopia.com/uploads/1/3/0/6/130620572/130620572.html#bottle+shoot+3d+game+apkIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007368.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7368 20884 bytes
SHA-256: 7ad586bba81ce67ecbca8ca8b7d1bce3417f4c1a6bc6c837bba4fbd3eb43a616
font_00_sfnt_off000012be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE 8748 bytes
SHA-256: 301d732323d18510519e69348bacd7b8a23f6a2875a01ccb942bcae0df2a3e3c
font_01_sfnt_off0000574e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 10064 bytes
SHA-256: b4e29a4940746ec53f3d4a3ce6ee1a3372929169f99809f349084aa4504cb9e7

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