Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3148955ea354d14…

MALICIOUS

PDF

33.7 KB Authoring application: Mobipocket Creator
MD5: 8c88d3c89187f881d498b4efd2f135f9 SHA-1: bd20adde9bcf4e828870f2969c4d144bda5e1914 SHA-256: b3148955ea354d14687d0d02f8a8e7363a61e0399e1944c10c7cad209dfe1e99
120 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded URLs pointing to external PDF files, indicating a link farm or phishing lure. The document body contains fragmented text and embedded URLs, reinforcing the malicious intent of directing users to potentially harmful websites.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://polksoccerfund.com/uploads/1/3/0/5/130551125/4383611.pdf
    • http://my-credential.com/uploads/1/3/0/6/130620510/gukurelo.pdf
    • http://chunchorecords.com/uploads/1/3/0/2/130270872/warenopitifokod-xuden-bimebadajulil.pdf
    • http://trickhorse.net/uploads/1/3/0/6/130604650/c45a320f64.pdf
    • http://michaelgierl.com/uploads/1/3/0/4/130436236/702632.pdf
    • http://northwestuu.com/uploads/1/3/0/5/130542968/130542968.html#bagong+simula+music

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000102a.bin
da3cde1cd5845b8eafed64e5c6a737dd01d8a67523a3e8c1b71f656a6f8b39da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102A 7820 bytes
font_01_sfnt_off00003b28.bin
378288d3133907284a1dd708aec606fa45674349f7e67e9eaedc79a8f6af9139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B28 16228 bytes

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