Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72fee7aa7f4f209…

MALICIOUS

PDF

69.6 KB Created: 2021-01-24 10:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 56bb1591aa18d8346c2987cd2356e6b3 SHA-1: 53f9aaee5f1716353ebf85b75656d6da55bafb86 SHA-256: c72fee7aa7f4f209d44bb2976bd7cf2945c3f96d14e5a20b5fd6bbbd8db84abd
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?utm_term=3+weaknesses+job+interview+answers PDF link annotation
    • http://azorocheat5.xyz/dililijekigaj4x2kk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449616/normal_5ffcbaac0c224.pdfIn PDF document text
    • https://rutejiredoratel.weebly.com/uploads/1/3/1/3/131383841/c84102e54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498366/normal_6001cba84d6aa.pdfIn PDF document text
    • https://fuvipizewovotat.weebly.com/uploads/1/3/1/0/131069886/pijijisaxa.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/sewavawavaboj_sugelodituzozek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375086/normal_5fcf8036a48c0.pdfIn PDF document text
    • https://tolawururajetam.weebly.com/uploads/1/3/4/8/134883146/2838b.pdfIn PDF document text
    • https://rinavupitaf.weebly.com/uploads/1/3/1/1/131164375/sibapageravuxujami.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382003/normal_6006ff9b9180c.pdfIn PDF document text
    • https://xaxepilote.weebly.com/uploads/1/3/4/2/134265473/tarowajopukunodumob.pdfIn PDF document text
    • https://jazigibebegada.weebly.com/uploads/1/3/1/6/131606339/c4d8931060de3a.pdfIn PDF document text
    • https://vagapirub.weebly.com/uploads/1/3/4/6/134648019/tifowurit-molowidukasel-gutoxi.pdfIn PDF document text
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/fac999a8d47ab.pdfIn PDF document text
    • http://ita-women.space/42842319576tct0g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5fcac09639662.pdfIn PDF document text
    • http://mon-cmbretagne.best/drum_machine_sampler_plugine2r33.pdfIn PDF document text
    • http://republvinb.fun/1959712501564yc4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/44553868198.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/19283995974.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/best_website_template_builder_software.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B3 5148 bytes
SHA-256: 68e022345ea253ab73d41166a26fb412287369ac89a19f0df766a365122662e9
font_01_sfnt_off0000f664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF664 10540 bytes
SHA-256: d61c65ca7c90e12ed0185e9ebbbdeff22db177eda0af843fb69fae0dbe03a022

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