Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eadf5c568689fe5…

MALICIOUS

PDF

34.7 KB Authoring application: PDFBox
MD5: 1691343f8b887c82a3d81bff2488c63d SHA-1: 145b0cbaaeb57f82b0d0dc3a27ef06feb3988437 SHA-256: 7eadf5c568689fe50d63ad85908dc99565d7e23e2347e11e5f6fb9045fcb77b5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, disguised as a free download for Adobe Acrobat Reader, which is a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the primary purpose is to redirect users to malicious content. The ML classifier and ClamAV detection further confirm the malicious nature of the file.

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://www.kworthy.org/uploads/1/3/0/2/130291350/viwudesotiguni_labupibikato_wofemetol_parisoxo.pdf
    • http://mooiedecoraties.com/uploads/1/3/0/6/130604419/0ed77d3f1a1.pdf
    • http://maplevalleyarts.org/uploads/1/3/0/3/130379146/55fa823.pdf
    • http://a2zaccountants.org/uploads/1/3/0/7/130738837/pizalewuguzupexori.pdf
    • http://aussiehomes.fund/uploads/1/3/0/4/130490719/zofoxuxaxoloxelexev.pdf
    • http://susanseitz.com/uploads/1/3/0/5/130543280/lanol-zitusumaxe-sewajoj.pdf
    • http://mfibuild.com/uploads/1/3/0/6/130605204/4ec3d8b181cbd0.pdf
    • http://npsvs.com/uploads/1/3/0/2/130287536/kawapaxisiwikog.pdf
    • http://succacti.com/uploads/1/3/0/7/130775537/d1dd990ba6a3f.pdf
    • http://skylerkilmernutrition.com/uploads/1/3/0/3/130323599/dekasitat.pdf
    • http://hostmaster.watertours.com.au/uploads/1/3/0/9/130969310/nukegibazidew-disowotowe-vuvul-vonisineg.pdf
    • http://dogasart.com/uploads/1/3/0/6/130620521/belakak.pdf
    • http://appraisejewelry.net/uploads/1/3/0/3/130323767/widanotura.pdf
    • http://caltempmissionb.org/uploads/1/3/0/4/130483645/4866211.pdf
    • http://janefaily.com/uploads/1/3/0/5/130588207/buwepaxut.pdf
    • http://scandinavianrelocationgroup.com/uploads/1/3/0/2/130289213/9835251.pdf
    • http://www.nevebros.net/uploads/1/3/0/3/130323488/660e3710227422.pdf
    • http://www.mahaliabamfordfoundation.com/uploads/1/3/0/5/130543771/jujipulitudukinikob.pdf
    • http://hardhathomeinspection.com/uploads/1/3/0/6/130620612/130620612.html#adobe+acrobat+free+download+uptodown

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000028f4.bin
e576c12abd1e5f83cef903444e32548c0f39fbb6678c0c1919d245aca3245be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28F4 8216 bytes

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