Malicious PDF — malware analysis report

Static analysis result for SHA-256 2908cd4e0dfc1d09…

MALICIOUS

PDF

37.2 KB Authoring application: Scribus
MD5: 3741dd196cddcc0ed1fc580470129665 SHA-1: 3b2a5b61a35674d42e22074d39a387ba73ff98e9 SHA-256: 2908cd4e0dfc1d09c068c456cd032f05a547b90f35d7b95cc87baab4bbe840ec
150 Risk Score

Malware Insights

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

The PDF contains a large link farm, with 31 external PDF links pointing to various domains. This is indicative of a phishing or SEO poisoning campaign. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://antarctic-huh.com/uploads/1/3/0/6/130639477/ed8150498a104.pdf
    • http://www.thenewgeorgians.com/uploads/1/3/0/2/130289319/pekuzibamuxasi.pdf
    • http://mta-sts.mail.stevannovakovich.com/uploads/1/3/0/4/130435843/185bf26a6.pdf
    • http://josephkerper.com/uploads/1/3/0/6/130639782/fd730248c0e30.pdf
    • http://bonniejohnston.com/uploads/1/3/0/8/130813366/zalowavuwi.pdf
    • http://www.gismondis.com/uploads/1/3/0/6/130639242/2587484.pdf
    • http://measuresofgrace.com/uploads/1/3/0/6/130640235/xazulovegobane_kabanugodevebe_jigikegabi.pdf
    • http://mfhinvestments.com/uploads/1/3/0/6/130639214/zesinasosafa.pdf
    • http://rbstrength.com/uploads/1/3/0/6/130621952/9835789.pdf
    • http://mindmasterssociety.com/uploads/1/3/0/2/130272403/jivigaloxamowoxuke.pdf
    • http://nicholslawpdx.com/uploads/1/3/0/7/130739786/famarivudezefi.pdf
    • http://markdumstorf.com/uploads/1/3/0/6/130604034/622d7ac5.pdf
    • http://nybellhouse.com/uploads/1/3/0/5/130546096/9ca10f13db4d768.pdf
    • http://revivesupportservices.com/uploads/1/3/0/3/130313159/8484429.pdf
    • http://mitsubishipricelist.com/uploads/1/3/0/6/130621460/35713ce0.pdf
    • http://reporteddas.space/uploads/1/3/0/4/130479435/difusomuja.pdf
    • http://sherrykloster.com/uploads/1/3/0/7/130739347/349378.pdf
    • http://host84.carmichaelnl.com/uploads/1/3/0/6/130620522/130620522.html#nitric+acid+67+sigma

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034b1.bin
aed08ec778a8e2d2652eb15a25fcfb1cf51e3f20e654ecbf73f1d856d9d3ceaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34B1 8036 bytes

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