Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e7812c823710cd…

MALICIOUS

PDF

39.5 KB Authoring application: Soda PDF
MD5: 9b9445719c88bc001c0bd1b7f62eb443 SHA-1: 1102e92c8fb3a1e8cdf60e4e4864b761e8da13e9 SHA-256: e2e7812c823710cdd8ec8262137f632fce55e54e299ae815718405d05dc37d34
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly suggest malicious intent. The document body contains garbled text and some URLs, reinforcing the link farm finding. The primary attack pattern appears to be directing users to a network of external PDF files, likely for phishing or SEO-based malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://xemirubul.clinicalresearchorganization.ru/uploads/2020/01/27/292706.pdf
    • http://lebosscodance.com/uploads/1/3/0/6/130620348/vigodig.pdf
    • http://kuvujotup.arteltiles.com/uploads/2020/01/28/1ca70e25b8c.pdf
    • https://patemitom.weebly.com/uploads/1/3/0/2/130289755/08b9898.pdf
    • http://xuve.seo-spytnik.ru/uploads/2020/01/28/7088064.pdf
    • http://adancerstouch.com/uploads/1/3/0/5/130588621/fibojusavezafazuz.pdf
    • http://tminz.net/uploads/1/3/0/4/130488195/suzemajisonoposo.pdf
    • http://lipoved.kasperplus.ru/uploads/2020/01/27/1888539.pdf
    • http://lickandapromiselabrador.com/uploads/1/3/0/4/130488470/d55ee310478eb.pdf
    • http://ivthepeople.net/uploads/1/3/0/2/130291355/falow_sonoron.pdf
    • http://rtcranch.com/uploads/1/3/0/2/130288762/4d9ede21f1.pdf
    • http://motorcycle-tracking.com/uploads/1/3/0/5/130551341/5322d074fa.pdf
    • http://ceasefiretomorrow.in/uploads/1/3/0/4/130488993/9316238c56b0cd.pdf
    • http://nipmucprincipal.com/uploads/1/3/0/4/130483990/bfdb4d6f3.pdf
    • http://amandasamanthabrookessecrets.com/uploads/1/3/0/3/130323465/130323465.html#gta+5+menu+mod+for+gta+sa+pc

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a0.bin
6a340ad462436f68365915e8174b38556599d15a54ea6e2a23b3a6db825285f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A0 8024 bytes
font_01_sfnt_off000052cb.bin
a1ce80d8d2b114c9b9748cac7a62edb08c89f57befd4ad79d2d8aff2b6022749		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52CB 16180 bytes

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