Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b45a3566a4efa3f…

MALICIOUS

PDF

36.0 KB Authoring application: Poppler-utils
MD5: 56a6649deb7ef51bbb4d13de0064930c SHA-1: 60f95261eb88c8bf8f1d584d0e40376f71dab31d SHA-256: 5b45a3566a4efa3fa4d8d091c8e38f6ca1d96e6557480fcf2292a404e42b1b2d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. The document body itself contains garbled text and references to 'DSM 5 criteria for substance abuse and dependence', which appears to be a lure to disguise the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://extradecenter.com/uploads/1/3/0/2/130289427/wibam_pasijijusadof_bilar_wotizole.pdf
    • http://reboundat.com/uploads/1/3/0/7/130775750/d95e26fd556.pdf
    • http://rejuvenationhealthcenter.net/uploads/1/3/0/4/130488213/2897571.pdf
    • http://guzledscotland.com/uploads/1/3/0/5/130551008/4513851.pdf
    • http://molecularo2.com/uploads/1/3/0/6/130605275/6090951.pdf
    • http://thecheckupapp.com/uploads/1/3/0/2/130288483/e9644d.pdf
    • http://alisonlawrence.com/uploads/1/3/0/5/130588291/906066.pdf
    • http://www.alisonbrucejeweller.com/uploads/1/3/0/6/130604027/latasofozanem.pdf
    • http://lunchpong.club/uploads/1/3/0/7/130739070/b1b62c9c5.pdf
    • http://dogtreatsventura.com/uploads/1/3/0/6/130639768/8289642.pdf
    • http://cupcakeswithanxiety.life/uploads/1/3/0/3/130379342/pibaxebowojofe.pdf
    • http://actingupchildrenstheatre.com/uploads/1/3/0/4/130483134/5d119ea9d.pdf
    • http://cachedistrictliteracy.org/uploads/1/3/0/3/130379081/0a1e591e1d49.pdf
    • http://allstatepavingandmasonry.com/uploads/1/3/0/6/130639831/5979383.pdf
    • http://jiuzhouyulechengnet.br3h.com/uploads/1/3/0/4/130488820/130488820.html#dsm+v+criteria+for+substance+abuse+and+dependence

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032f8.bin
502f8f846a43b91a3fb5f260d0e325adb37138322622698bf7a2d1e629245f16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32F8 7856 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.