Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd77daa129bc1b5…

MALICIOUS

PDF

52.1 KB Created: 2020-04-26 06:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 73ad5a27e9d0d094971629ca2ce43cf8 SHA-1: bb23fbd3a81dac03de0bb11e07e9878cb1631a30 SHA-256: 9fd77daa129bc1b592a18364a05af201a8cbbaae7123b22ca821511399f6318c
62 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 or generically named PDFs, suggesting a link farm for SEO manipulation or redirection. The document body, though heavily obfuscated, contains a reference to 'diabetes mellitus guidelines india' and a URL that aligns with this theme. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to distribute links, likely to phishing or malware sites.

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://gotrsummit.com/uploads/1/3/0/3/130313525/130313525.html#diabetes+mellitus+guidelines+india
    • http://girlcodeinc.com/uploads/1/3/0/3/130379612/6603131.pdf
    • http://brooksmotocrossclub.com/uploads/1/3/0/4/130483238/xowugifasaxivap-xomivoze-wawiz.pdf
    • http://villagerockshopofsedona.com/uploads/1/3/0/7/130775370/4850008.pdf
    • http://kapitimushrooms.com/uploads/1/3/0/7/130739344/8890398.pdf
    • http://tools.highpinesrandr.com/uploads/1/3/1/3/131379803/rirerowegudopir.pdf
    • http://hiram-rodriguez.com/uploads/1/3/0/5/130588433/biratolo.pdf
    • http://dronesphere.com/uploads/1/3/0/3/130379070/6879219.pdf
    • http://aliceforgykerr.com/uploads/1/3/1/3/131381540/4004943.pdf
    • http://millimaximator.com/uploads/1/3/0/6/130639370/geweboxapowewo-ruwovujar-tifuw.pdf
    • http://candacewolfe.com/uploads/1/3/1/4/131407761/5afe1dd.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_off000097f4.bin
079eeca0d3f4da156c7d96c729e4c4291c46ef3e9c49fad8c79161251a909ce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97F4 8660 bytes
font_01_sfnt_off0000b92e.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB92E 2600 bytes

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