Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be6d518cab0c602…

MALICIOUS

PDF

39.7 KB Authoring application: QPDF
MD5: c7429b8fdb64158deda26068e9d86aca SHA-1: 98a17822250558df33c4ac369f0873c0d780d990 SHA-256: 8be6d518cab0c6023a69ccb9cfc403b3066dfb257585280dd9d85fa565108545
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV specifically identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs suggest a phishing or traffic redirection scheme, aiming to lead the user to potentially malicious content hosted on these external sites.

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://i1spotify.com/uploads/2020/01/27/5424271.pdf
    • http://daydreambakery.com/uploads/1/3/0/5/130588982/bixaniv-gumixor-webavi.pdf
    • http://nissajackman.org/uploads/1/3/0/6/130639105/5776299.pdf
    • https://vukerikokuw.weebly.com/uploads/1/3/0/5/130551534/39934.pdf
    • http://moonlilee.com/uploads/1/3/0/4/130476873/memotiwulimepapeve.pdf
    • http://rrproductions.shop/uploads/1/3/0/5/130550825/turetif.pdf
    • http://dabunun.gotaserena.com/uploads/2020/01/29/xededagovizelew.pdf
    • http://athletesrecycle.com/uploads/1/3/0/3/130323968/pinoxaj.pdf
    • http://bul.vipiski-besplatno47.icu/uploads/2020/01/28/869b371f.pdf
    • http://mozi.techindulgence.com/uploads/2020/01/28/898078.pdf
    • http://actorheadshotphoto.com/uploads/1/3/0/6/130604689/zibevopisub.pdf
    • http://dopuwew.chess-nut.com/uploads/2020/01/27/466217d46815ea2.pdf
    • http://pat.idealista-login.com/uploads/2020/01/29/kigajafapux_gozagumopi_gudisafuwup_xowefanu.pdf
    • http://portal.createweb24.com/uploads/1/3/0/3/130379590/130379590.html#the+absolutely+true+diary+of+a+part-time+indian+character+traits

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001390.bin
99a787fdd6d2209a4106caf89bcde40161aae2eee40c1de81203fc0fdc2e2567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1390 7692 bytes

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