Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e2de3d3977ca06…

MALICIOUS

PDF

37.1 KB Authoring application: LibreOffice Draw
MD5: e2f53c1c87d9500b0876621ad262e9e6 SHA-1: 943e8b244115a48e396cec26c609cca8d71b7411 SHA-256: b9e2de3d3977ca068eea898213e3067b3f11f23cdb3a9bdb42b4be5222298375
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs, identified as a link farm. The primary heuristic indicates this is a critical PDF SEO link farm, suggesting the document's purpose is to drive traffic to these external PDF files. The ML classifier and ClamAV detection strongly support its malicious nature. 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://crowdtrends.com/uploads/1/3/0/5/130590325/doxafaxap_dopupiwigexemu_ronoxema.pdf
    • http://www.quant-ba.com/uploads/1/3/0/6/130605383/596636.pdf
    • http://x0643993xstreamtravel.xsideas.com/uploads/1/3/0/4/130477131/4746814.pdf
    • http://enbit.com.au/uploads/1/3/0/6/130639729/3238682.pdf
    • http://kraimgroup.com/uploads/1/3/0/6/130620390/sirudozogaruf-denibopaduze-negipixere.pdf
    • http://decentralizedcoin.org/uploads/1/3/0/4/130489706/8604034.pdf
    • http://dukesrefrigeration.com/uploads/1/3/0/2/130273845/53f34ac82.pdf
    • http://stahlhuthreeds.com/uploads/1/3/0/6/130639812/gosifixaf.pdf
    • http://www.training.redpantscoaching.com/uploads/1/3/0/2/130289290/razekif_nedodun_kevudixow.pdf
    • http://myjandj.com/uploads/1/3/0/8/130813616/520f0c.pdf
    • http://jtgeneralcontracting.com/uploads/1/3/0/5/130551896/2474131.pdf
    • http://poppachips.com/uploads/1/3/0/8/130873791/zekivet.pdf
    • http://mail0.interlochtransport.com/uploads/1/3/0/7/130776132/sunirolotas.pdf
    • http://webdisk.agapecs.co.za/uploads/1/3/0/7/130776826/limogikebi.pdf
    • http://www.nic-stories.com/uploads/1/3/0/5/130540661/todofawomeni-pituwas-wadixeju.pdf
    • http://ncpimaging.com/uploads/1/3/0/8/130814754/3182294.pdf
    • http://waitakaruruschool.com/uploads/1/3/0/7/130739275/tegaluzakebuxum-kowinugijipe.pdf
    • http://mail.argusjanitorial.com/uploads/1/3/0/4/130476563/bamofatobapakin.pdf
    • http://lansingmihomesforrent.com/uploads/1/3/0/4/130435846/gudifu_fawiwetiv.pdf
    • http://rossjarratt.com/uploads/1/3/0/7/130776299/bubomo-kamigagikib-bowavokudusazi-bejodojitalev.pdf
    • http://skinrepairmd.com/uploads/1/3/0/4/130489020/7a9db6431.pdf
    • http://kadrome.site/uploads/1/3/0/7/130776804/bikamuxufu-balafiju.pdf
    • http://wainuiponyclub.org/uploads/1/3/0/8/130814711/vunekarovadutivezif.pdf
    • http://mail.online.ukumar.in/uploads/1/3/0/7/130739549/naked.pdf
    • http://74-123-72-236.mgwnet.com/uploads/1/3/0/6/130621533/130621533.html#differentiate+managerial+accounting+and+financial+accounting
    • http://kadrome.site/uplo

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea5.bin
0b0999979fa164dd725c7681ea6e6532b82309e848f084b96cc9bf27511afbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 7456 bytes

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