Malicious PDF — malware analysis report

Static analysis result for SHA-256 9178e1e6bcc9b1ca…

MALICIOUS

PDF

40.0 KB Authoring application: Poppler-utils First seen: 2021-10-11
MD5: 99169fd1dd17b64431108f6017dcd255 SHA-1: 5836a01cc01fae98709764ddedf039d240e87cdf SHA-256: 9178e1e6bcc9b1ca5e57130a5dcc8926dc815f9e3eb0d5e6d632436b42df6ed2
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains a lure to install a fake Adobe Reader update, which is a common social engineering tactic. It also hosts a large number of external PDF links, many of which appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://sexpressyourself.com/uploads/1/3/0/6/130639877/6849412.pdf In PDF document text
    • http://biztriage.com/uploads/1/3/0/4/130488584/bosizewasaril.pdfIn PDF document text
    • http://purebarretexasstrong.com/uploads/1/3/0/5/130539455/vusapifipewowawe.pdfIn PDF document text
    • http://cleetusandcars.com/uploads/1/3/0/6/130639267/tenadurutoveve-vevapufol-fefetilepu.pdfIn PDF document text
    • http://midwesthomebuilding.com/uploads/1/3/0/6/130621447/kujan-wuvawep-lukazarub.pdfIn PDF document text
    • http://studiodentisticosg.com/uploads/1/3/0/5/130588169/wezafubapar.pdfIn PDF document text
    • http://localfixclinic.com/uploads/1/3/0/3/130313610/wagajosoxatexijamu.pdfIn PDF document text
    • http://freeparadeofhomes.com/uploads/1/3/0/6/130620509/famuvulavupefo.pdfIn PDF document text
    • http://noiteediamusic.com/uploads/1/3/0/4/130477287/4092571.pdfIn PDF document text
    • http://3dmarinerswalk.com/uploads/1/3/0/4/130488273/favusatagarajaj.pdfIn PDF document text
    • http://mybarrieroflavish.com/uploads/1/3/0/8/130814995/130814995.html#free+download+adobe+acrobat+reader+for+windows+10In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AA 8932 bytes
SHA-256: 4333cead91b72572e51700f44476b3ea37f6ec9fb186604110a93ff04009eebd

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