Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d6979335dca4ff…

MALICIOUS

PDF

39.7 KB Authoring application: Nitro PDF First seen: 2020-09-24
MD5: 65268c98a24a767a013d9104052fb024 SHA-1: c819f512289f12224ebb232803a918f5c0993af1 SHA-256: 19d6979335dca4ff20b9240f37c52a2dc7c805e02d2555ca34fb1065d69dcfaa
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body, though partially corrupted, also contains many of these URLs, suggesting the primary purpose is to drive traffic to these external resources.

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://nexox.fotomag.ru/uploads/2020/01/27/monofixod-lomopexeba-sarog-delorakuj.pdf In PDF document text
    • http://drivingstem.net/uploads/1/3/0/2/130288720/9176059.pdfIn PDF document text
    • http://volip.eosplit.ru/uploads/2020/01/29/243fbb5a66.pdfIn PDF document text
    • https://nujesusapojedot.weebly.com/uploads/1/3/0/4/130483879/f964b42.pdfIn PDF document text
    • http://selwoodplumbing.com/uploads/1/3/0/5/130539247/9462123.pdfIn PDF document text
    • http://mommieceoapparel.com/uploads/1/3/0/4/130436182/3f3fe7db.pdfIn PDF document text
    • http://masterpechi.ru/uploads/2020/01/28/324c07ef928fd8.pdfIn PDF document text
    • http://nabu.prekrasniy.fund/uploads/2020/01/28/8159088.pdfIn PDF document text
    • http://jinufelin.alfavent.info/uploads/2020/01/29/femejenelatozu.pdfIn PDF document text
    • http://fapinet.3destate.ru/uploads/2020/01/27/wiran-jozevuxe-toboruj.pdfIn PDF document text
    • http://floridasnowicecream.com/uploads/1/3/0/4/130490250/5692329.pdfIn PDF document text
    • http://rumefewu.vikabibikova.ru/uploads/2020/01/28/wefugogexugiraxel.pdfIn PDF document text
    • http://xavap.eastwestmine.com/uploads/2020/01/29/puzotuwukopive-jipawu-pivinuxufit-turize.pdfIn PDF document text
    • https://wedifegafanose.weebly.com/uploads/1/3/0/4/130483275/dibukabox-desuxolobulod.pdfIn PDF document text
    • http://ltchunting.com/uploads/1/3/0/6/130620685/xugezul-kekifesiv.pdfIn PDF document text
    • http://tek.edinsoncastro.com/uploads/2020/01/27/tubaxiwu.pdfIn PDF document text
    • http://tan.srpautomotrestucuman.com/uploads/2020/01/28/wenaluvexa.pdfIn PDF document text
    • http://pmehard.com/uploads/1/3/0/5/130589316/73c7f726.pdfIn PDF document text
    • http://infonetacademy.tech/uploads/2020/01/27/5703815.pdfIn PDF document text
    • https://duwufanovivag.weebly.com/uploads/1/3/0/2/130273789/nudexoludosano.pdfIn PDF document text
    • http://sspowersolutions.com/uploads/1/3/0/2/130289209/3dab7f14e05.pdfIn PDF document text
    • http://wisemoneystrategies.com/uploads/1/3/0/6/130604544/130604544.html#fallout+4+max+mod+limitIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000164d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164D 8128 bytes
SHA-256: 18b60cb01416cded73036dd3194d8d900ef54f2f613e1c06d07259bddcef31a6