Malicious PDF — malware analysis report

Static analysis result for SHA-256 a907873e4da8c8e4…

MALICIOUS

PDF

51.6 KB Authoring application: Poppler-utils
MD5: 322d97833d4aab9e285ad6d0cad10ceb SHA-1: 72469930bd37a68333b4a63a81d1090dca33e486 SHA-256: a907873e4da8c8e403acf04c2111c17630ce278641c2cf112348a5acdfe8a96e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or malware distribution. The document body itself is largely garbled but contains some of the same URLs, reinforcing the link farm attack pattern.

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://rosbil.com/uploads/1/3/0/8/130874564/tunarozumivop-wadovatevu-xaxatogatagalu-baruluw.pdf
    • http://americanbeachtour.com/uploads/1/3/0/8/130874260/bc1b662c8e9b370.pdf
    • http://rachelbri.com/uploads/1/3/0/6/130620719/fazupo.pdf
    • http://www.jemsquare.com/uploads/1/3/0/2/130271004/89ec1711.pdf
    • http://ninjagoartoftheninja.com/uploads/1/3/0/5/130547286/susewemefofudodeluma.pdf
    • http://sta-66-99-58-198.ladse.org/uploads/1/3/0/7/130739570/7f75535464d.pdf
    • http://www.buffalohempsupply.com/uploads/1/3/0/8/130873841/kenokadupesa_sexos_xiwisa_zokafubojilubak.pdf
    • http://in-naperville.com/uploads/1/3/0/6/130620690/nezijiwugodo.pdf
    • http://www.one3sport.com/uploads/1/3/0/4/130483345/549dfdd553.pdf
    • http://ninefortyfilms.com/uploads/1/3/0/5/130589218/1191462.pdf
    • http://silkefinis.com/uploads/1/3/0/4/130436147/depedemotokij.pdf
    • http://fitspit.online/uploads/1/3/0/6/130605083/7159604.pdf
    • http://mypathwaytosuccess.org/uploads/1/3/0/7/130776026/detefovik.pdf
    • http://saltcityvolleyball.com/uploads/1/3/0/4/130488220/fanaf_jejuxubokada_mitabetivosata_mawonevo.pdf
    • http://www.the-oo.com/uploads/1/3/0/7/130775222/davibunesegalis-tujono-divodawosesosoz-sepozifuwitozam.pdf
    • http://craftyknotts.com/uploads/1/3/0/5/130543483/ximitugitoweg.pdf
    • http://salvosurfboards.com/uploads/1/3/0/5/130545484/wumega_vupodi.pdf
    • http://triadsurface.com/uploads/1/3/1/0/131070574/gisudunodo.pdf
    • http://latinasazon.com/uploads/1/3/0/6/130604725/f6182159d4.pdf
    • http://notably.com.au/uploads/1/3/0/4/130483703/ed88ab.pdf
    • http://x0147885xstreamtravel.xsideas.com/uploads/1/3/0/5/130551245/130551245.html#how+to+clean+a+nescafe+dolce+gusto

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e2.bin
a4b7c9ee0113090c8161d8d975817a2504bbdb28a8a64bcbfdf817d77a43cf8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E2 8540 bytes

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