Malicious PDF — malware analysis report

Static analysis result for SHA-256 addcdf68971b66e4…

MALICIOUS

PDF

52.5 KB Created: 2020-04-17 17:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 502b677a99a363fdc1cbcb9c064534a3 SHA-1: 424fb7f4214d89de0245741462bfe796a6872ffd SHA-256: addcdf68971b66e44f6d1e33b7d381d190d13f99e75cf3c708b82ab892833290
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, contains text related to 'Us army photos free' and references to wkhtmltopdf, suggesting a lure to entice users to click on the embedded links. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 26 external links, predominantly hosted on 'yuanmilano.com', pointing towards a campaign to drive traffic to potentially compromised or malicious web pages.

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.
  • 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://iamlauravanessa.com/uploads/1/3/1/3/131379615/131379615.html#us+army+photos+free
    • http://yuanmilano.com/uploads/1/3/0/8/130874493/vivose-kesuvuto-zesowal-xoluvar.pdf
    • http://prechterlivestock.com/uploads/1/3/1/4/131406207/fbb319f8f50ae51.pdf
    • http://oldschoolmechanics.com/uploads/1/3/0/6/130604283/4548653.pdf
    • http://shanleighhair.com/uploads/1/3/0/6/130620801/36338273a1.pdf
    • http://inspire-empire.com/uploads/1/3/0/8/130874381/377008.pdf
    • http://createincome4life.com/uploads/1/3/0/7/130776781/6d579047.pdf
    • http://chelseahadd.com/uploads/1/3/0/8/130814110/pexix_temewet_felurugani.pdf
    • http://deeparra.com/uploads/1/3/1/1/131164479/jonage-tekilakivedeles-fimipumufudod.pdf
    • http://fatsbeauty.com/uploads/1/3/0/6/130620665/tugenebikalob.pdf
    • http://yahnketreeservice.com/uploads/1/3/0/8/130874580/85caa2971b7d.pdf
    • http://waidherz.com/uploads/1/3/0/9/130969695/boraleged.pdf
    • http://katylimo.org/uploads/1/3/0/6/130604801/2eaad5810b73d2.pdf
    • http://nicholasedwardslimited.com/uploads/1/3/0/7/130775111/jurak-sefegojibajel-waporike.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000862c.bin
2a9db213f6c7daa1c8cd51b2e9001a359112495d7606f52280e8993ba6bb1a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x862C 8524 bytes
font_01_sfnt_off0000a604.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA604 2604 bytes
font_02_sfnt_off0000af36.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF36 16036 bytes

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