Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc1b8aee8726ba7…

MALICIOUS

PDF

37.7 KB Created: 2020-04-28 06:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ac472f51c62c283d6781ce1a0a941c8b SHA-1: 9db7e0a2d9e2df1301c83ceabbe9b67e11c0c50b SHA-256: 1bc1b8aee8726ba7ded4b998ba138e072c98e1218298d95e3200bd3d4778109d
70 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically slugged and hosted on unrelated domains, suggesting a link farm or SEO poisoning tactic. One prominent link points to 'http://eliminatorcnc.com/uploads/1/3/1/4/131483234/131483234.html#sage+50+accounts+v24++free', which, combined with the 'SE_DOWNLOAD_BUTTON' heuristic, indicates a lure to download potentially malicious software disguised as a free version of 'Sage 50 accounts'. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://eliminatorcnc.com/uploads/1/3/1/4/131483234/131483234.html#sage+50+accounts+v24++free
    • http://mrsprayfoamplus.com/uploads/1/3/0/4/130435499/jutenavenigapi.pdf
    • http://blackstarwines.com/uploads/1/3/0/5/130590157/ronadusepudizawe.pdf
    • http://stallionplayers.com/uploads/1/3/1/0/131070394/dasor.pdf
    • http://amyvan.com/uploads/1/3/0/4/130483370/seworukarot.pdf
    • http://kylepucciamusic.com/uploads/1/3/0/4/130483767/ravago-nukajewilow-nezonupe-jowilaribiwuz.pdf
    • http://ceciliasheadlicecleaning.net/uploads/1/3/1/4/131453016/ziwokivakugutor.pdf
    • http://nelly-beauty.com/uploads/1/3/0/7/130776219/794353757d2.pdf
    • http://joannaleighsimon.com/uploads/1/3/1/1/131164173/zexozonitawod.pdf
    • http://wepickwellness.com/uploads/1/3/1/4/131453299/9231063.pdf
    • http://highsocietysst.com/uploads/1/3/1/3/131379049/jugukenekof.pdf
    • http://kathyannsartjewelry.com/uploads/1/3/0/6/130605312/zozelipovusunu.pdf
    • http://jfhaderillc.com/uploads/1/3/1/4/131438448/bibofaji_botato.pdf
    • http://wepickwellness.com/uploads/1/3/1/4/13
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c4b.bin
05dd8f80eaaf51552e90ddda16cfde676b8f82ef9513d32d12d10a4a1c0d8ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 7776 bytes

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