Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43ecbe698f8e93a…

MALICIOUS

PDF

48.2 KB Created: 2020-09-05 04:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 747831f66f3539796bc925c69a5b7f22 SHA-1: 2c0911eea2435eba8f27c17dd10e3e3cc73f5009 SHA-256: a43ecbe698f8e93a0c8a22834bca8f360a9902bd75ac4b5982a1ff0671e6870a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF documents, characteristic of a link farm. One of the primary links, https://ttraff.me/wix?keyword=implosion+mod+apkpure, is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.me/wix?keyword=implosion+mod+apkpure
    • https://static.usrfiles.com/ugd/544c7e_f108ab7e96a64e85945c7aafe6451991.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_1b044ecf3bce4e39af9a60ff0e057b5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_effd39af4ac145d3ad4c24de40568546.pdf
    • https://static.usrfiles.com/ugd/04c368_0b18909e10154edbbf93bb9e04ee7ff1.pdf
    • https://static.usrfiles.com/ugd/c3548c_214c40d8622c400db2ef8073e69c26f2.pdf
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/28582019475.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/94701098821.pdf
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/totadanozalab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/protection_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/bmtc_bus_pass_form_for_students_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/28503592843.pdf
    • https://cdn.shopify.com/s/files/1/0472/2963/2677/files/lakedilixekaxisekejewapel.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0510/files/62508818949.pdf
    • https://static.usrfiles.com/ugd/11b39a_7e58423178d046389511491e43d5a99c.pdf
    • https://static.usrfiles.com/ugd/f08e01_eda35d66ed444ce78a5ab09933c855c9.pdf
    • https://static.usrfiles.com/ugd/ffe0d3_91e54c0ff62f44eaae3b1dacb200a5b0.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_off00007226.bin
18de3df5fbadd70c44225af7bbe93ca34bface12f2f74a7dc9865f0bb65ef277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 4908 bytes
font_01_sfnt_off000082a6.bin
cbb8550c9e18c3099b8df988048718b34364d1f4794ba62bcfb9d267ff18a0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A6 10364 bytes
font_02_sfnt_off0000a624.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA624 4324 bytes

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