Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c5f511bd0f01c5…

MALICIOUS

PDF

45.8 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: 4fb366a3ac1cb5379915ac3d07300c25 SHA-1: 3f00998804b2e701ca90263d54186819a293d32d SHA-256: a9c5f511bd0f01c5b4352f40b62688a68bc10ac4298d410cf67a99ded9efa09a
192 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a phishing or content-luring campaign. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports this assessment. The embedded URLs are likely used to redirect users to malicious websites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://affectedfilms.com/uploads/1/3/0/6/130639471/2609727.pdf In PDF document text
    • http://wingingitarts.com/uploads/1/3/0/4/130435673/5ad52fa2.pdfIn PDF document text
    • http://youtubevideoindir.club/uploads/1/3/0/2/130289218/e2c42.pdfIn PDF document text
    • http://thesailingbroker.com/uploads/1/3/0/5/130588923/zumiv.pdfIn PDF document text
    • http://ncsdactivities.com/uploads/1/3/0/4/130483429/ee3be.pdfIn PDF document text
    • http://swboffice.com/uploads/1/3/0/6/130639962/5829963.pdfIn PDF document text
    • http://tomryan.com.au/uploads/1/3/0/5/130543107/50868ca522.pdfIn PDF document text
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/2/130272240/130272240.html#acordes+piano+bohemian+rhapsodyIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD 9196 bytes
SHA-256: 42bfb62bd3b5ce994cbf23cd78d18c485d576681c4fb06b466259f90a1dae66b
font_01_sfnt_off00005d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D04 18100 bytes
SHA-256: 12245e4678306973b9a8aef1e147f71bb514d50041ed9a3e9a220ee4a221ecf9
font_02_sfnt_off00007849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7849 2604 bytes
SHA-256: 83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe

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