Malicious PDF — malware analysis report

Static analysis result for SHA-256 54cadfc9f624a47e…

MALICIOUS

PDF

87.9 KB Authoring application: Scribus
MD5: 988531197d033b38fb86f24d6362c539 SHA-1: 9fa5a8a5506d5c2402dc5aa57a64dd6d802a638b SHA-256: 54cadfc9f624a47e6e450dfce2fcf3b8f8c7eaf2fa333750810a7a37cd79c24b
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm. This is indicative of a phishing or SEO manipulation tactic, where the goal is to redirect users to potentially malicious content hosted on various domains. The ClamAV detection and ML classifier strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://drbarrnd.com/uploads/1/3/0/4/130483167/8fbf2e81629fb8d.pdf
    • http://octsummershow.com/uploads/1/3/0/4/130489926/0f0d234.pdf
    • http://daygameinthebronx.com/uploads/1/3/0/3/130323535/vugaredugoze.pdf
    • http://thetrainingyogi.com/uploads/1/3/0/6/130604702/bafem-lodimi.pdf
    • http://mikedonovancoronado.com/uploads/1/3/0/2/130289610/fikitejaderim.pdf
    • http://amongotherrunners.com/uploads/1/3/0/5/130589449/joselinemijo-finulukila-gimivolupere.pdf
    • http://optoutlaw.com/uploads/1/3/0/5/130539496/zixoruvusi-pegalifogizub-fibujumem-pivorapid.pdf
    • http://vancouvergaragerepair.com/uploads/1/3/0/5/130551311/3271289.pdf
    • http://tierisch-tragbar.de/uploads/1/3/0/5/130539702/573d89.pdf
    • http://message6666.com/uploads/1/3/0/6/130604210/dupepasi.pdf
    • http://miwoori.net/uploads/1/3/0/5/130539329/093733e9c21f70.pdf
    • http://woodlandstuition.com/uploads/1/3/0/4/130489367/130489367.html#alibaba+aur+40+chor+hindi+kahani

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001403.bin
34f2d6dbb71a7a2f7a8692e745a9552180dcf840674bed9c622a4be75f91fd29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1403 7660 bytes
font_01_sfnt_off0000f05b.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF05B 1388 bytes
font_02_sfnt_off0000fb10.bin
dad77da59f78ee920d9d488364b2029271bd33fae88cb57ba45fe61c518d2a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB10 18892 bytes

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