Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f381c1964bb01ef…

MALICIOUS

PDF

64.3 KB Created: 2020-08-26 14:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 412e0acabf1fe94290bad1f2738c51aa SHA-1: 0d2ee12e76f83d0abb8a92452973a6dcc58c2931 SHA-256: 2f381c1964bb01ef85fbb1e83d8d8bb743b0631dd30b7d7602402543122c3285
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be part of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL and a reference to historical criminalistics, likely a lure to entice clicks. The presence of numerous PDF links suggests a campaign to distribute 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/pify?keyword=antecedentes+historicos+de+la+criminalistica
    • http://topidatax.ccwaite.com/uploads/1/3/0/7/130775422/19f32850.pdf
    • http://files.fitmalahide.com/uploads/1/3/1/3/131379296/6347244.pdf
    • http://files.simplymello.com/uploads/1/3/1/3/131398428/1343.pdf
    • http://files.tomcondotta.com/uploads/1/3/1/0/131070792/c08bb10cec19838.pdf
    • http://files.drtvetcare.com/uploads/1/3/0/7/130740298/2699529.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1274/files/daduzajusubosakisonexug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/bully_anniversary_edition_game_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/gilopemibuwaranotobajizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/tilepowagikuxizokad.pdf
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/vuwudewenilutilijitovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/replacement_hard_drive_for_hp_15-_f233wm.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/sugusulenifarubewoberexub.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/81989321056.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/33257070796.pdf
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/auditing_and_investigation_ican.pdf
    • https://cdn.shopify.com/s/files/1/0435/1760/8090/files/bitdefender_mobile_security_review_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/botabivupoxel.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_off0000bd7a.bin
fa39a2b7b2d1c5c2875100c2a15b992cff4f1c1c8b954e83e78527d0e2940c71
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7A 5168 bytes
font_01_sfnt_off0000ced3.bin
70bce07df8628927aee4e331c637c5f6d97044f807d1cf0e02e4f9fb8652d6f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xCED3 11564 bytes