Malicious PDF — malware analysis report

Static analysis result for SHA-256 58cc53216e82a343…

MALICIOUS

PDF

39.3 KB Authoring application: pdf-parser
MD5: db39d8b5cef5b624bb9b19cf82164cce SHA-1: 582757da56bc9e3fec258a010b454fb62a365f75 SHA-256: 58cc53216e82a343de8ab7ed4ed35f5110f01c46d825279a17c387ee2180c3a6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 strategy. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and a critical heuristic detected a 'PDF_SEO_LINK_FARM'. The document body text is heavily obfuscated and does not provide clear intent, but the overall structure strongly suggests a phishing or malware distribution campaign. No scripts were extracted from this sample.

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://andrelamy.eu/uploads/1/3/0/5/130588658/nuvawapuratate.pdf
    • http://phisigsigiotarho.com/uploads/1/3/0/6/130605019/cb7a46.pdf
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/9/130969179/pededufusi.pdf
    • http://lisatroutman.com/uploads/1/3/0/6/130621076/6dda2f2.pdf
    • http://downtownlacondos.com/uploads/1/3/0/4/130477278/de8ab.pdf
    • http://www.thestarwheel.com.au/uploads/1/3/0/3/130313117/jidobiwojidovo.pdf
    • http://autodiscover.exchangersltd.com/uploads/1/3/0/4/130478481/jinugitirubukob.pdf
    • http://blak-out-squad.com/uploads/1/3/0/4/130488295/tufowagupivo_guruwe_mexop_kefelebarolipen.pdf
    • http://betterauctions.com.au/uploads/1/3/0/5/130588762/xaroxeraxugugane.pdf
    • http://alaskasummerinstitute2020.com/uploads/1/3/0/7/130776887/vewere_nojib.pdf
    • http://adsl-63-193-34-173.gtrnet.com/uploads/1/3/0/7/130776151/pered-gejageful-taposedonudiva.pdf
    • http://www.fairbankssnowclearing.com/uploads/1/3/0/4/130478831/miliruwetaden.pdf
    • http://www.pitstoppump.com/uploads/1/3/0/5/130588559/masetefirubize.pdf
    • http://dejesusholisticlaw.com/uploads/1/3/0/5/130590532/midodibotud.pdf
    • http://afieldguidetotheparanormal.net/uploads/1/3/0/6/130639452/1121828.pdf
    • http://swinboroughtech.com/uploads/1/3/0/4/130483118/3099325.pdf
    • http://8t2u0.salon225.com/uploads/1/3/0/5/130551230/130551230.html#convertir+pdf+en+word+gratuit
    • http://lisatroutman.com/uploads/1/3/0/6/130621076/6dd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c21.bin
f35a8b20875ff534a1769aa322e55505962f94bb8874f4ab0aa72e07035fd014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C21 9400 bytes

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