Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0b1cdb1ca6340f…

MALICIOUS

PDF

37.4 KB Authoring application: Mobipocket Creator
MD5: f217c0b1a7753e601c13308475f0782e SHA-1: 8c1cf5052fbc1c8739d7545e3ce1e559ddb595ea SHA-256: 1d0b1cdb1ca6340f48ca3f1af8d99725f565c663c513bee0daf74f713598303a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support the malicious nature of this file. No scripts were extracted from this sample, limiting the analysis of direct execution behavior.

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://advizher.com/uploads/1/3/0/2/130272937/vokuwuferifemi.pdf
    • http://www.villatocaya.com/uploads/1/3/0/9/130969878/3818316.pdf
    • http://admin.solsticeastrology.com/uploads/1/3/0/4/130476065/7531051.pdf
    • http://comfortmypeoplerwanda.org/uploads/1/3/0/5/130544295/9316992.pdf
    • http://stainedpeacock.com/uploads/1/3/0/6/130621622/bikogaka.pdf
    • http://oconnorcoachingservices.com/uploads/1/3/0/5/130545434/3cf0a70f4abdca6.pdf
    • http://ebebiemansphotography.com/uploads/1/3/0/6/130621459/6472812.pdf
    • http://cheryl-scott.com/uploads/1/3/0/6/130604248/a94f16164355c.pdf
    • http://iamnotdunn.com/uploads/1/3/0/2/130272485/689bb1686.pdf
    • http://gaijinplaza.pr-wine.net/uploads/1/3/0/6/130639051/mupezajiso.pdf
    • http://www.ruhannmark.com/uploads/1/3/0/5/130542894/fexubogiruku.pdf
    • http://francestors.com/uploads/1/3/0/4/130490977/wojoliramujuxox-bolukejulad-vajorarefes.pdf
    • http://dreamslikeair.com/uploads/1/3/0/3/130323622/gimimobigirudewom.pdf
    • http://74-123-79-124.mgwnet.com/uploads/1/3/0/6/130604928/dorogi.pdf
    • http://portalfinanciero.net/uploads/1/3/0/7/130740175/77cdf9eb637a3a.pdf
    • http://www.dogfriendlybribie.com.au/uploads/1/3/0/6/130621905/4837509.pdf
    • http://commercialcompliance.com/uploads/1/3/0/5/130543092/a73098.pdf
    • http://baffen35.com/uploads/1/3/0/8/130814225/mudoxonedokosedikub.pdf
    • http://www.healdsburgflowerschool.com/uploads/1/3/0/8/130873957/gawek-zojilosasavom-dirin-rulal.pdf
    • http://yesonzforpvsd.com/uploads/1/3/0/2/130274145/4097400.pdf
    • http://gregjiel.com/uploads/1/3/0/2/130289283/130289283.html#cooling+tower+efficiency+calculations
    • http://74-123-79-124.mgwnet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306b.bin
23ecd1d3de47c5f0f1669aa2a336afa1c01663e2df67e9d5c5c2e0ff7885a697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x306B 8960 bytes

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