Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fdcaa18466206dc…

MALICIOUS

PDF

36.6 KB Created: 2020-06-16 06:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 358da0312d35954132669d182610a51c SHA-1: b5c33b0603250c223f1c62605a4e26f24cd92ebe SHA-256: 7fdcaa18466206dc42f6607c5d445e6ec4931f1e8a24072eddaee20cbd0464aa
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various subdomains. This pattern is indicative of a link farm designed to lure users into downloading potentially malicious content. The presence of a 'download button' heuristic further supports this. No scripts were extracted from this sample, limiting the ability to determine the exact payload.

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://host68.carmichaelnl.com/uploads/1/3/0/3/130323130/130323130.html#market+research+lesson+plans
    • http://patgorgewalker.com/uploads/1/3/0/3/130323302/5816631.pdf
    • http://hostmaster.navp.co.uk/uploads/1/3/0/4/130488934/4072317.pdf
    • http://lilyclewis.com/uploads/1/3/0/6/130621055/4968305.pdf
    • http://padingtonschool.com/uploads/1/3/0/5/130589198/sezonewopexodonugiwi.pdf
    • http://cpanel.lllofts.com/uploads/1/3/0/2/130291036/mukop.pdf
    • http://erickajfitness.shop/uploads/1/3/1/3/131379213/votafemaze-vegebirotudame.pdf
    • http://alantonpta.org/uploads/1/3/0/5/130551880/pofijutagarawox.pdf
    • http://mta-sts.mail.simonkono.com/uploads/1/3/0/6/130605228/9c2c4ff5.pdf
    • http://noreply-05.info/uploads/1/3/0/7/130775629/tirofasiwim_serifeluj.pdf
    • http://goodseedsshop.com/uploads/1/3/1/4/131453111/vuvudemitetigezudu.pdf
    • 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_off0000628c.bin
ded8a29afdf38d33bc43b3c47653971e15ea5d7b066e43abbad0a9dfcc4d1c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628C 10720 bytes

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