Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb82264d7133a5c…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 14:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7507aa97a41dd701ef564aad81157cfd SHA-1: f4ed4be2b21d4cb7972fce4ec81a3eb7e5bf014f SHA-256: 3bb82264d7133a5c9dfd53f1ca0ff6cadf2f0c2d97b96b236f23545243ccde3d
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive lure related to a 'Bluetooth app sender apk share' and embeds multiple external links. One of these links, https://ttraff.cc/pify?keyword=bluetooth+app+sender+apk+share, is identified as a malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning. The file's primary function appears to be redirecting users to potentially harmful websites.

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=bluetooth+app+sender+apk+share
    • http://files.cparkermcmullenbushman.com/uploads/1/3/1/4/131405940/xasori_zojit_lipukojesamirib_xorodutedir.pdf
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/nginx_1._6_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/37596753771.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/defamation_libel_and_slander.pdf
    • https://cdn.shopify.com/s/files/1/0435/5575/0049/files/60517150875.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/83732793916.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/25439638818.pdf
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/drawer_track_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/91801472879.pdf
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/wuligafafosowolefozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/cambridge_companion_to_liberation_theology.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/calculus_and_its_applications_10th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/rizusezitegamuxofuvuroxu.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_off0000415d.bin
052d59c5b6f71d182e0416d47a900388dfe4d286447ec993b7e7d5b73d35c48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x415D 5160 bytes
font_01_sfnt_off000052da.bin
acbc106968b9435009308cfc9e9de19dc1e735ac376a4861487453354f386256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DA 8432 bytes
font_02_sfnt_off00006fde.bin
b59a55ea3e244d112cf41092e8b12a9cbd919ea449304e64bd85798b588e8ca0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 18072 bytes

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