Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5deb459d257bca3…

MALICIOUS

PDF

38.0 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 992c5ce8083d532b342f322f16d9d32f SHA-1: 362bef7c67355ce01af0ed8f146b8106ee38cb40 SHA-256: c5deb459d257bca36a6d205b104045eaa87cbb671af757383f64151681c75b0b
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for distributing malicious content or conducting phishing attacks. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated and does not provide clear user-facing content, but the presence of numerous external links points to a redirection-based attack. No scripts were extracted from this sample.

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://hackspokane.com/uploads/1/3/0/5/130550696/7753951.pdf In PDF document text
    • http://www.realjamesriley.com/uploads/1/3/0/5/130590689/bipijovumiribut.pdfIn PDF document text
    • http://nwm5.club/uploads/1/3/0/5/130551127/pamosametidu.pdfIn PDF document text
    • http://beyondbeliefthebook.com/uploads/1/3/0/6/130604511/2c99bd008.pdfIn PDF document text
    • http://pcbaugh.com/uploads/1/3/0/5/130540286/8041137.pdfIn PDF document text
    • http://sonoranorganics.com/uploads/1/3/0/5/130589310/5108805.pdfIn PDF document text
    • http://monsoonal.com/uploads/1/3/0/8/130813601/1164047.pdfIn PDF document text
    • http://upholsterysewingmachine.net/uploads/1/3/0/6/130621857/punoligowapid-lofijutoki-konabanerumelo.pdfIn PDF document text
    • http://statewidelandsales.com/uploads/1/3/0/5/130547142/2750778.pdfIn PDF document text
    • http://medicaleducationupdate.net/uploads/1/3/0/4/130435531/131ae8c8230a0.pdfIn PDF document text
    • http://anxiouslittlepishy.com/uploads/1/3/0/2/130273980/1ad7a6b59d403c.pdfIn PDF document text
    • http://behindthecurtainofbylaw.net/uploads/1/3/0/2/130288316/sunifibexeva-jatafapagimuw-tozanenozi.pdfIn PDF document text
    • http://dipagnu.com.br/uploads/1/3/0/8/130814960/1dd12cb3.pdfIn PDF document text
    • http://mojopix.net/uploads/1/3/0/6/130620767/xekimidix-xazurukaja.pdfIn PDF document text
    • http://silverarcherdesigns.com/uploads/1/3/0/6/130639026/sejupexa.pdfIn PDF document text
    • http://blackmountainscottage.com/uploads/1/3/0/6/130622089/buzujawoxad_zosugeju_towobiwasinaj.pdfIn PDF document text
    • http://moodage.net/uploads/1/3/0/2/130287972/zuwenilenox.pdfIn PDF document text
    • http://permezone.com/uploads/1/3/0/7/130775372/343b31.pdfIn PDF document text
    • http://benkregel.com/uploads/1/3/0/5/130551303/bujilixurutekurad.pdfIn PDF document text
    • http://a1991107xstreamtravel.xsideas.com/uploads/1/3/0/2/130287538/130287538.html#couper+un+pdf+en+2In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000344c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x344C 9504 bytes
SHA-256: 2fb9beb90ecac267cbb557b6453e772b73b3e0d12b8b943bf13d2b32bcea376f