Malicious PDF — malware analysis report

Static analysis result for SHA-256 589729c798f1819b…

MALICIOUS

PDF

43.2 KB Authoring application: pdf-parser
MD5: ee99451715adacc0f7ed60fa9b6a47ef SHA-1: 96a2363e31fb2bed97379b63c299b04ca633846d SHA-256: 589729c798f1819b534a857e3eff49832ebeb8c518674d446bb090091dc39f6c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests the primary purpose is to redirect users to potentially malicious websites, likely for SEO spam or phishing. The ClamAV detection and ML classifier further support its malicious nature. 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://wangwangqunfaruanjianmianfei.thesurge.cc/uploads/1/3/0/4/130490776/kitodekex.pdf
    • http://www.wildorchidtobermory.com/uploads/1/3/0/7/130775907/mogigam.pdf
    • http://kansaimetaphysicalassociation.com/uploads/1/3/0/7/130740477/xowadilorigibote.pdf
    • http://boostbaby.net/uploads/1/3/0/4/130483138/mixumisebazoxu.pdf
    • http://princetonfamilywellness.com/uploads/1/3/0/5/130544591/7609512.pdf
    • http://productionalgarve.com/uploads/1/3/0/5/130546237/9387615.pdf
    • http://oregonprenup.com/uploads/1/3/0/7/130776026/ruvapitamuli_rupetazadusoje.pdf
    • http://mycityadd.com/uploads/1/3/0/5/130539820/6147338.pdf
    • http://vintageautolit.com/uploads/1/3/0/4/130489168/9559199.pdf
    • http://aikosilkart.net/uploads/1/3/0/6/130621089/finamisaxatavoxuvi.pdf
    • http://nwm2020.club/uploads/1/3/0/8/130874668/wekikixogasofasaku.pdf
    • http://mid-citymaintenance.com/uploads/1/3/0/2/130289480/bojusutarikur.pdf
    • http://www.sacredearthconservancy.org/uploads/1/3/0/8/130873899/1208649.pdf
    • http://cleviagrandclean.devsite-1.com/uploads/1/3/0/5/130551526/130551526.html#how+to+calculate+cdf+of+exponential+distribution

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003bc7.bin
9378714b25a6ecd4e52da09998f0ccbb2887442fa670cf798c8b345fb36317f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BC7 4112 bytes
font_01_sfnt_off00004cc5.bin
b183d4a64b81b615558b7d5e1d1780fe889736a679f46fcc977798bcf14a4544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC5 9016 bytes

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