Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a22699ebe68c4a3…

MALICIOUS

PDF

52.3 KB Authoring application: Inkscape First seen: 2020-08-25
MD5: fdc2878296bbe6bd26d2dc459c52be5f SHA-1: 380fa631f363ba620628a6b9b67c62668aec6525 SHA-256: 1a22699ebe68c4a389b9ab8c61589e40cb4c13fae48f45277c5d84988cfd7bdb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as phishing. The document body, though heavily obfuscated, contains references to the linked URLs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://umutsulun.com/uploads/1/3/0/4/130489001/vazularasobipev-bogudofita.pdf In PDF document text
    • http://kevinskids.org/uploads/1/3/0/4/130436159/fibazemab.pdfIn PDF document text
    • http://mylocalpayroll.com/uploads/1/3/0/4/130435939/c5ea9a.pdfIn PDF document text
    • http://popsoupmag.com/uploads/1/3/0/3/130379231/sudize.pdfIn PDF document text
    • http://seve.blog-sovetov.ru/uploads/2020/01/28/vagabevinunagaw.pdfIn PDF document text
    • http://keykidoll.com/uploads/1/3/0/6/130640111/xiperibubuwu.pdfIn PDF document text
    • http://beyondthebellharrisonburg.com/uploads/1/3/0/7/130739746/130739746.html#rhoma+irama+begadang+1In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00008486.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8486 16732 bytes
SHA-256: a954f0f4707a7043b63eef75d3c5c66fcd48cda01c81cda12f37a0f4a74e8a31
font_00_sfnt_off000010c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2 8088 bytes
SHA-256: d087ec65be26d0b489cb940129c26b21c476da89c4b0a071d90ef0c2d46bc7b9

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