Malicious PDF — malware analysis report

Static analysis result for SHA-256 46225a1726344b68…

MALICIOUS

PDF

75.8 KB Created: 2020-08-12 11:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9445e1324706684673bb3bae6031f60a SHA-1: 5f5d2bfbe00bb4183797d34871a184451d0cac7a SHA-256: 46225a1726344b68071af9c5e5a0bd191b844af08d175571c395446f06968f19
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=fractura%20de%20colles%20pdf%202015'. The document body, though heavily obfuscated, appears to contain this URL as well. The PDF also exhibits characteristics of a link farm, with numerous external links, one of which is to 'https://cdn.shopify.com/s/files/1/0436/4769/7049/files/hunger_games_weebly.pdf'. This suggests a social engineering attack aiming to redirect users to malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wb?keyword=fractura%20de%20colles%20pdf%202015
    • http://files.dockconnectionllc.com/uploads/1/3/1/8/131856757/010efe6123f0.pdf
    • http://files.match-gems.com/uploads/1/3/0/9/130969243/waruxe-gibotusupuwe-viputefetapaj-walugogigebomev.pdf
    • http://tozuzog.sarahpearman.co.uk/uploads/1/3/1/4/131409090/tulum.pdf
    • http://files.rayofaura.com/uploads/1/3/1/8/131856446/fejukanefo_kesotokefet.pdf
    • http://files.christiandewulf.com/uploads/1/3/1/8/131858044/monumaj_neranit_zibitenuz_luzekete.pdf
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/hunger_games_weebly.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/morumamuvugenuwafivukik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/jvc_kdr_330_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/pubopedanika.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/dionysus_story.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/assam_tet_syllabus_2020_lower_primary.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2540/files/6259218585.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xepokububug.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/pebuvezumamelejutinojipab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/jozobiwirixelekizan.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/81948779770.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_off0000e769.bin
28aacb00431f0e16980d0f67b597ef361210b0fe937546a9e89c9b1857697706
pdf-font-stream PDF embedded font (sfnt) at offset 0xE769 5556 bytes
font_01_sfnt_off0000fa66.bin
c0271f05118439e5122a94ca8d86895d1468f65e49ba485ef6469ad97a7e477d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 12116 bytes