Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfe50b9fd5a5ddd…

MALICIOUS

PDF

34.9 KB Created: 2020-09-02 02:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c93a19783e84bbb989f94ecb7f8e65b SHA-1: f5f1d38dfce80b61ce19ced72cfc9e4e95004e01 SHA-256: 7bfe50b9fd5a5dddffb4746154218121f562e62d5c87d4336e5797769cd7485e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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.club/wix?keyword=croft+and+barrow+king+sheets
    • https://static.usrfiles.com/ugd/3c8574_fa8170eee07d4723ada8d9762ef7a42a.pdf
    • https://static.usrfiles.com/ugd/73f3b0_adf4616c563f41ccae7be083f866ee19.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9abba6067f14abaa91de48c8a82056d.pdf
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/anti_epilepsy_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/tunavex.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/tongue_twister.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/pewas.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/sonic_says_memes.pdf
    • https://static.usrfiles.com/ugd/b8c837_db36a262cf0345a29e1921386e480fe3.pdf
    • https://static.usrfiles.com/ugd/26938b_56c81fbaca3c427c967a77d6720f9289.pdf
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/57061976647.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/paxibeleji.pdf
    • https://cdn.shopify.com/s/files/1/0434/8051/4726/files/video_editing_software_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0438/9565/2504/files/elements_of_statistical_learning_github.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/pabokezonaxubomedidekos.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_off0000499d.bin
07601662e1361fa43ea37ba9337a338d2e4bafc259eb65d9ea98819a1bccb1db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x499D 5336 bytes
font_01_sfnt_off00005bd5.bin
1e7d8647ff459cc5000e70f6880dd729c74c8e135632bf904ce3e7c105091a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD5 10220 bytes

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