Malicious PDF — malware analysis report

Static analysis result for SHA-256 687e1073c8ab9f0c…

MALICIOUS

PDF

36.7 KB Authoring application: Soda PDF
MD5: 57f03674c2d15387d265c40ce96bd627 SHA-1: 387de18734c91f131dfa21974e751afacec8121f SHA-256: 687e1073c8ab9f0c4e3e4cc89d832a16a6c8108dc13f295fda219140e5b7b490
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://fovipola.321cero.net/uploads/2020/01/28/1398031.pdf
    • http://neworleansgainswave.org/uploads/1/3/0/4/130476294/36b046f1f0747.pdf
    • http://ciardhamedia.com/uploads/1/3/0/4/130483937/6736286.pdf
    • http://easttexasdoula.com/uploads/1/3/0/5/130588663/jidenugolixijebeju.pdf
    • http://solidinvestmentgroupbvba.com/uploads/1/3/0/3/130379272/ruzexop.pdf
    • http://curiouscatphotos.weebly.com/uploads/1/3/0/6/130621682/5513493.pdf
    • http://xupekoko.prorealgames.com/uploads/2020/01/29/kiduwaviz-pifofure-tekeku-dabijixusibolar.pdf
    • http://elizabethmackintosh.com/uploads/1/3/0/5/130589252/nakifeper-vudumasufujag.pdf
    • http://newresume2019.com/uploads/1/3/0/5/130539129/tubufinafafupugozaru.pdf
    • http://transformologywithhelen.com/uploads/1/3/0/3/130313766/tamakokumunab.pdf
    • http://luwifano.sietefjeans.com/uploads/2020/01/29/4080892.pdf
    • http://studioksandb.com/uploads/1/3/0/5/130539311/mefazonepe-vexanemorolani-boxajilomirab.pdf
    • http://themanadvice.com/uploads/1/3/0/4/130476368/zesakaveziguk.pdf
    • http://huertorriqueno.com/uploads/1/3/0/2/130287239/suriwowumo.pdf
    • http://happytohelpcambodia.com/uploads/1/3/0/3/130323180/5309504.pdf
    • https://vinuniludab.weebly.com/uploads/1/3/0/3/130323493/josifatiwuromekefan.pdf
    • http://evo-hemp.com/uploads/1/3/0/2/130289641/ritufedejolej_fexipekemijetoj.pdf
    • http://cradleinferno.com/uploads/1/3/0/6/130604905/5215553.pdf
    • http://shelbycolgan.com/uploads/1/3/0/3/130323315/malituko_fibin_miwetuvo_xuxurekezixaruv.pdf
    • http://oakbrookoptometry.com/uploads/1/3/0/3/130379424/68ccd.pdf
    • http://pivimobar.tuboginya.ru/uploads/2020/01/28/7b42e1b3572e86.pdf
    • http://vepud.alianzaamericanadecolombia.com/uploads/2020/01/29/fesakodegawumo-buwetipipowifa-pedejopajas.pdf
    • http://dadipi.ars-shipping.com/uploads/2020/01/27/7748934.pdf
    • http://newperspectivemedical.com/uploads/1/3/0/6/130639808/130639808.html#macy%27+s+egyptian+cotton+sheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001791.bin
413c67c58efe2b6ef5eb1596875a24f64970a73668e0733d3d9b2315f0b8f6d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1791 8708 bytes

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