Malicious PDF — malware analysis report

Static analysis result for SHA-256 4730030eeaa0a5bc…

MALICIOUS

PDF

38.8 KB Created: 2020-05-20 09:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9749731376ec9e107339cef46dd2badc SHA-1: 8180202f6a00d9ac273de772f9f87afc6c9cc1c7 SHA-256: 4730030eeaa0a5bc774dd14c5c52a05d800e6b5ce39083f488e0d5c1816f7ff5
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 structured to appear as SEO content, indicating a link farm or redirection strategy. The presence of a 'download button' lure further suggests an attempt to trick the user into navigating these links. The document body, though heavily obfuscated, contains references to URLs that are likely part of this malicious infrastructure.

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://losangelesvigilantes.com/uploads/1/3/0/4/130477074/130477074.html#resident+evil+5+reaper
    • http://griwines.com/uploads/1/3/0/8/130814439/1832913.pdf
    • http://opheimwealth.com/uploads/1/3/0/8/130813757/5053435.pdf
    • http://girlyventure.com/uploads/1/3/1/3/131380733/9769813.pdf
    • http://sftutoring.org/uploads/1/3/0/5/130588342/matusemaxavov-jenatelufowebo-xizebolesemon.pdf
    • http://flbservices.com/uploads/1/3/0/5/130589360/wegijog-funiwixavage-bakedokenevasiw-pepuxujafofaxum.pdf
    • http://greenleafchiropractic.com/uploads/1/3/1/4/131482992/suwazamodotej-lepavoxeveninu-sozan.pdf
    • http://coderedphilly.org/uploads/1/3/0/7/130740175/09df9dd0.pdf
    • http://tendoushi.net/uploads/1/3/1/4/131453384/fonufexiw-kijol-gowenugid-nufamatege.pdf
    • http://burgundye17.net/uploads/1/3/1/4/131437172/mibusaxedelilu.pdf
    • http://brownltc.com/uploads/1/3/1/3/131379709/folodexo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ad.bin
e81ed90bf92d7594c2ce458b5efe91d617e3a0fc47ef96bcf161d9762b2309ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 3292 bytes
font_01_sfnt_off00006d70.bin
35b4cc55e414c5cd7ed7d0ae4b1950c6cb56b952b22371e0c895b92191430617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D70 10060 bytes

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