Malicious PDF — malware analysis report

Static analysis result for SHA-256 73868761edf0da9c…

MALICIOUS

PDF

33.3 KB Authoring application: QPDF
MD5: d3e67563684b6499ceea46c55555144a SHA-1: 4881cf0d7ee11a810683aa404f7274a4e2f32df6 SHA-256: 73868761edf0da9c55055666d795f033bb55b11f3b512aefac3df4d2af4ebf2e
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 manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites.

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://myludingtontherapy.com/uploads/1/3/0/8/130814052/vukalenumibu.pdf
    • http://thefruitdoctor.co.uk/uploads/1/3/0/6/130620672/dopuradutozujub-nenotirax-kesile-majoxi.pdf
    • http://hitmeupfirst.com/uploads/1/3/0/7/130776351/91a56e5f0.pdf
    • http://weareriot.org/uploads/1/3/0/7/130775630/6422100.pdf
    • http://quikprinttn.com/uploads/1/3/0/5/130588444/tofijerufebuna.pdf
    • http://dominatrixindenver.com/uploads/1/3/0/5/130589064/pomagomum-jileb.pdf
    • http://dreamfluffers.com/uploads/1/3/0/2/130270923/jaxogikupigibu-juwido-miluzaf-zoxefifa.pdf
    • http://www.wisdomrecoverycounseling.com/uploads/1/3/0/3/130379060/kogakexorimujamalid.pdf
    • http://nextgenadvancedsupplements.com/uploads/1/3/0/5/130588731/fulogepe-xopumanojadum-jekepupiz.pdf
    • http://www.bgwooddesign.com/uploads/1/3/0/6/130620272/kufamanasurabivisowe.pdf
    • http://umbau.us/uploads/1/3/0/2/130288465/xapusid-fenoladem-poninalipon.pdf
    • http://outdoorkidsacademy.com/uploads/1/3/0/7/130739873/db494345311f0a.pdf
    • http://wingmingexchange.com/uploads/1/3/0/4/130478935/1308383.pdf
    • http://memoryloves.com/uploads/1/3/0/4/130491932/zapejozasuripa.pdf
    • http://tallerespiritual.com/uploads/1/3/0/7/130776008/vunebifisoz.pdf
    • http://kulturperlen-salling.dk/uploads/1/3/0/5/130541346/panitok-fikolid-gowut.pdf
    • http://mta-sts.mx.mbc-bethesda.org/uploads/1/3/0/6/130639708/vuwenimujotajixib.pdf
    • http://74-123-72-107.mgwnet.com/uploads/1/3/0/4/130489051/130489051.html#shia+namaz+ka+tarika+hindi+pdf+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000251f.bin
82a3753a969960d81a7d0032904ba14cc253bddb19fc3f2d94a5a9149b650d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251F 7668 bytes

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