Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fdedda95268d866…

MALICIOUS

PDF

27.8 KB Authoring application: QPDF
MD5: b086cd2e193a85b71b1995d466bb2718 SHA-1: 47e61299740fe6890d174d8d67443bdfdb658d48 SHA-256: 9fdedda95268d866a87d4d76edde6fbe693920f8d79812e924b3afd81c1175fb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection for 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also assigned a high probability of maliciousness. The document contains a large number of embedded URLs pointing to other PDF files, suggesting a link farm or redirection mechanism designed to lead users to malicious content. No scripts were extracted from this sample.

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://mail.mckeeoutdoors.com/uploads/1/3/0/8/130813899/foporopuwelez_mizujomogabeku_sulozogeduparap.pdf
    • http://alexabuffini.com/uploads/1/3/0/2/130291785/wexexuwixa-kaxidomikodeked.pdf
    • http://pro-hillclimbers.org/uploads/1/3/0/3/130324092/nemum_vomidul_sozavubajuno_fikur.pdf
    • http://b-kool.com/uploads/1/3/0/4/130490665/2163072.pdf
    • http://tactical17.com/uploads/1/3/0/7/130739164/talokezugafat.pdf
    • http://dipagnu.com.br/uploads/1/3/0/4/130436079/d86c15e447766.pdf
    • http://hostmaster.wearebones.com/uploads/1/3/0/6/130621142/2cebe2e.pdf
    • http://lisacmathieson.com/uploads/1/3/0/6/130621989/3e2061.pdf
    • http://qnek.net/uploads/1/3/0/4/130479513/vixuwemez.pdf
    • http://paintingcontractorct.com/uploads/1/3/0/2/130292104/6454329.pdf
    • http://mitchellplumbingllc.com/uploads/1/3/0/4/130483052/6952089.pdf
    • http://hostmaster.refinedblinds.co.uk/uploads/1/3/0/4/130435959/9c02613dbd4.pdf
    • http://georgiacrook.co.uk/uploads/1/3/0/6/130603808/numuwolitoz.pdf
    • http://bostontangofestival.org/uploads/1/3/0/7/130739577/toxituxonavebisor.pdf
    • http://inwardvision.com/uploads/1/3/0/7/130776068/130776068.html#solving+linear+inequality+equations

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001742.bin
ff811de85decb500e52800ab517e3a70dab7bbbf489f964dedcbcf289c244c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1742 6116 bytes

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