Malicious PDF — malware analysis report

Static analysis result for SHA-256 83175edd4b5ef2e9…

MALICIOUS

PDF

62.3 KB Authoring application: Solid Converter PDF First seen: 2020-09-24
MD5: ab90c4d024284be52f872f33f86b0dc4 SHA-1: f49c8240e7af107ede0561a686482356f03139be SHA-256: 83175edd4b5ef2e9b7a6b1a315ff468b0114f55d45e10cc3b34e9b25e1018d2b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV and ML heuristics confirm the malicious nature of the file. The embedded URLs suggest an attempt to redirect users to potentially malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://100places-locations.com/uploads/1/3/0/2/130289387/9a91f3e0276631.pdf In PDF document text
    • http://alternativerecoverysolutions.com/uploads/1/3/0/4/130476795/3688301.pdfIn PDF document text
    • http://derrettphoto.com/uploads/1/3/0/7/130775398/9186997.pdfIn PDF document text
    • http://programsformindfulliving.com/uploads/1/3/0/3/130313111/xavefigopasowaxa.pdfIn PDF document text
    • http://directinservicetraining.com/uploads/1/3/0/3/130313166/abc34de358bd.pdfIn PDF document text
    • http://somersetfoodtrail.org/uploads/1/3/0/4/130476519/130476519.html#calibredrv+manual+pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000011c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3 9804 bytes
SHA-256: 03da5c59112840b5b435e88e64a7883b56bfc5889e0de8210b0a331cc90a979f
font_01_sfnt_off0000a5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FB 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_02_sfnt_off0000aecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECB 16036 bytes
SHA-256: b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211

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