Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96c0ccc85acfa47…

MALICIOUS

PDF

51.4 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 4a5cf171cfdaac1eaaab56af432b83bf SHA-1: aef22205082ddaa7243da2ba0266e434422350e4 SHA-256: d96c0ccc85acfa472383d19df6fbe2c2e244cbc629cf6bc5167c368c1c42a764
152 Risk Score

Malware Insights

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

The PDF document was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of embedded external links, indicating a link farm strategy. The primary heuristic firing, PDF_SEO_LINK_FARM, confirms this, highlighting the mass of external PDF links. The document body contains text related to 'The Name of the Wind' and author Pat Rothfuss, likely a lure to disguise the malicious intent of directing users to numerous external PDF files.

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://cwhypnotherapy.com/uploads/1/3/0/2/130291884/662399.pdf In PDF document text
    • http://oclacrosse.net/uploads/1/3/0/5/130538997/1144008.pdfIn PDF document text
    • http://miamicustomtours.com/uploads/1/3/0/5/130588261/51e4225968939.pdfIn PDF document text
    • http://modish716.com/uploads/1/3/0/2/130289638/ligor.pdfIn PDF document text
    • http://whateverwelding.com/uploads/1/3/0/4/130435716/b7654a3cc0b.pdfIn PDF document text
    • http://mydriwashonline.ca/uploads/1/3/0/4/130476322/mewudimasezepakilaj.pdfIn PDF document text
    • http://norrischildcare.com/uploads/1/3/0/4/130435819/8927163.pdfIn PDF document text
    • http://motorcyclespeakers.org/uploads/1/3/0/3/130313186/274c26288473.pdfIn PDF document text
    • http://riwimov.app3pinfo.online/uploads/2020/01/28/pukiborugewurani.pdfIn PDF document text
    • http://mybest30minutes.com/uploads/1/3/0/5/130540208/rapolewagoripiwama.pdfIn PDF document text
    • http://exponentialtimes.tv/uploads/1/3/0/5/130590443/loteposofaxekumene.pdfIn PDF document text
    • http://diosamedicalesthetics.ca/uploads/1/3/0/7/130740547/refisadubixad.pdfIn PDF document text
    • http://policetrailer.com/uploads/1/3/0/2/130274269/130274269.html#the+name+of+the+windIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: excelappdevelopment.com 12 samples

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1327 8304 bytes
SHA-256: 889af9893f7738b9fada3958eed8090918cdc1bc5a6eb5537a77de5cd6553b7d
font_01_sfnt_off00008232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8232 16384 bytes
SHA-256: 76d0edce5bdb93a691a0309c49e7369480f5d97eef5486ab960fc16df6d92a06

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