Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a45422f38bcba8…

MALICIOUS

PDF

35.2 KB Authoring application: QPDF
MD5: 7608afbd133b9572d8e2d4ee6945ae17 SHA-1: 366b02ed6ea10c1ebeb39594feda877b495a0c5c SHA-256: 93a45422f38bcba8db8efb99f312d0c07f39a347bf07ce73ab720cc5a806db4a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent. The embedded URLs suggest a link farm designed to redirect users, potentially for phishing or SEO abuse. No scripts were extracted from this sample.

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://forshua.com/uploads/1/3/0/4/130483766/e30d6a0.pdf
    • https://rubakakedeporu.weebly.com/uploads/1/3/0/4/130476732/nusitutu.pdf
    • http://aarstudiomasters.com/uploads/1/3/0/6/130620807/mobokomusojidijopir.pdf
    • http://bagajuvevu.flabgu.com/uploads/2020/01/27/suzibekanegere_vixajebita_tukokubinerem.pdf
    • http://vsekrossy.ru/uploads/2020/01/27/mepupotedabiz.pdf
    • http://2016found.com/uploads/1/3/0/4/130488850/4b87c169.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/5/130589121/130589121.html#240-+count+bounce+fabric+softener+dryer+sheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000116d.bin
a2c05da48369946be72014c2d9774677041f2eeb0726562b3b236106aa9ad08c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116D 9232 bytes

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