Malicious PDF — malware analysis report

Static analysis result for SHA-256 363a3d123039943e…

MALICIOUS

PDF

35.9 KB Authoring application: Mobipocket Creator
MD5: 365f66d5d7976ee6dc97e740c4719a55 SHA-1: 5785562ce08381a18da2f4b8e1658c6ad26369ef SHA-256: 363a3d123039943e96a9eec36d535e1031071de00be73e7a097af1f017a171da
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary heuristic identified a link farm with the dominant host 'mycloset2yours.shop', suggesting a phishing or malware distribution campaign.

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://mycloset2yours.shop/uploads/1/3/0/2/130270986/vogopokelug_subagikumilapa_beroji.pdf
    • http://mirrorpayroll.net/uploads/1/3/0/5/130588512/33e111ffb97140.pdf
    • https://rimepelovepag.weebly.com/uploads/1/3/0/4/130492315/8507286.pdf
    • http://celestialsciencearomatherapy.com/uploads/1/3/0/4/130488312/kamanas.pdf
    • http://royalflorals.com/uploads/1/3/0/6/130639901/tenug.pdf
    • http://tmpropertysolutions.com/uploads/1/3/0/6/130604871/junevelosirufu.pdf
    • http://peoplefollowingjesusworldwide.org/uploads/1/3/0/5/130545043/gokosiv_raropa_davudivak_faxiveval.pdf
    • http://curiousbeans.com/uploads/1/3/0/5/130551231/watelokuxemara.pdf
    • http://romanticism55.com/uploads/1/3/0/6/130604492/8aef0a.pdf
    • http://doulajane.com/uploads/1/3/0/5/130589214/3194090.pdf
    • http://soundsolutionsmarketing.net/uploads/1/3/0/6/130621061/6824636.pdf
    • http://dartmouthcoveconcierge.com/uploads/1/3/0/3/130379219/rumajelafuvev-rituzema-xufimutov-pigatuvenoj.pdf
    • http://neurology-u-tokyo.com/uploads/1/3/0/5/130551164/pufito-jefekexe.pdf
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/6/130605497/130605497.html#tri+state+bus+to+midway

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013bf.bin
45381d45dc1d0ff368f366777bb9b8c924f5f991e300aa2878e17226c740a843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BF 8216 bytes

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