Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a955c5ed9bcac4…

MALICIOUS

PDF

44.7 KB Created: 2020-08-25 10:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b679f735b8887d6dd505a4f40ee6aa75 SHA-1: e5f2176e80a33d098111975c468bf138e35690a0 SHA-256: 25a955c5ed9bcac47af6a1d7fff2f1da01bde258c54b981be6503ad492575f10
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=bugs+liker+mod+apk'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which point to Shopify domains. The presence of a 'download button' lure further supports the malicious intent. The document body contains text related to 'bugs liker mod apk', suggesting a lure for potentially unwanted software.

Heuristics 4

  • 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.
  • 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
  • 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/pify?keyword=bugs+liker+mod+apk
    • http://files.gocmovies.com/uploads/1/3/1/4/131453695/junita_rapos_wunisifawur_tupodukuwomit.pdf
    • http://zamonepiw.johnknoxhouston.org/uploads/1/3/1/1/131163599/4541725.pdf
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.captainmorganssailcharters.com/uploads/1/3/1/3/131381607/b178bb.pdf
    • http://lituz.lawtycoon.com/uploads/1/3/0/8/130874493/8139584.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/75552536551.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/the_succubus_south_park.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/96984046173.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3169/files/ansioliticos_e_hipnoticos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/batikakerojoba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/57408642204.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/zexeriru.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/61548814737.pdf
    • https://cdn.shopify.com/s/files/1/0433/8624/1189/files/nesuzeduzuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0807/files/free_calendar_planner_template_2019.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_off00007023.bin
92504276911d5078ab4d3848bc16a8ba9eba3a3fa71038e6be937ed8a7db7812
pdf-font-stream PDF embedded font (sfnt) at offset 0x7023 5392 bytes
font_01_sfnt_off0000825a.bin
fc178b151b16db18a5fc93631898a21f81447fa9182bddfe8be6d6a3cc26897b
pdf-font-stream PDF embedded font (sfnt) at offset 0x825A 10380 bytes