Malicious PDF — malware analysis report

Static analysis result for SHA-256 6daf7f7807bac8ed…

MALICIOUS

PDF

40.2 KB Authoring application: PDFBox
MD5: ff77a8913af6f0a67e50053092b2d0f1 SHA-1: 0e2a97ab08dfe62d11a8d44f42564fa160aaa16e SHA-256: 6daf7f7807bac8ed1ff73f15886263298f55fc35edfdfe98995279e685210a67
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on external websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body text is a lure, attempting to disguise the malicious nature of the embedded links.

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 https://witoxovi.weebly.com/uploads/1/3/0/3/130379371/9687173.pdf
    • http://msexcelplus.com/uploads/1/3/0/5/130538840/lusiworotana.pdf
    • http://taorinjapan.com/uploads/1/3/0/2/130274305/pabuguririveda_fikoxumalekekuw.pdf
    • http://theawesomeguide.com/uploads/1/3/0/6/130621225/9430233.pdf
    • http://ellijayhideaway.com/uploads/1/3/0/2/130270804/9260789.pdf
    • http://lechenienarkomanii-kostroma.ru/uploads/2020/01/28/546717f1480c.pdf
    • http://bneiakivadetroit.org/uploads/1/3/0/5/130541000/lebajum_xepizejobogider.pdf
    • http://alexandraresmerita.eu/uploads/1/3/0/2/130271212/xetekuxa.pdf
    • http://vozamol.nillastuart.com/uploads/2020/01/29/vinopuzotuvesise.pdf
    • http://myadnteam.com/uploads/1/3/0/5/130542935/wodetusu_seguwewumov_monapajem_feduditan.pdf
    • http://lowcostphotobooths.co.uk/uploads/1/3/0/6/130639521/b83de72fd.pdf
    • http://radmanusa.com/uploads/1/3/0/6/130620880/bujovele.pdf
    • http://sweetestdreams.org/uploads/1/3/0/4/130483514/130483514.html#metro+exodus+weapons+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001337.bin
3c36fb6284246397f8189d4f6134112836fbeb8651687ab7c42a67006c24cf05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1337 7744 bytes

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