Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b366f23f4b138c…

MALICIOUS

PDF

39.9 KB Created: 2020-08-29 21:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d0970df81e8528b74bcf0779f25286f SHA-1: ff343820c0891d6dcb1422134bcc65aeabd2a562 SHA-256: 80b366f23f4b138c6f5b54c8b0428eb27478af28d28fdb58e8291d1d231fe045
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=conectores+para+un+ensayo+en+frances'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0430/1268/5977/files/14481327244.pdf'. The document body, though partially corrupted, contains text related to the embedded URLs, suggesting a lure to entice users to click the malicious link.

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.com/wix?keyword=conectores+para+un+ensayo+en+frances
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/14481327244.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6453/files/89573034126.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/82715846349.pdf
    • https://static.usrfiles.com/ugd/9c43ec_8b6294095d8a4016a6dd08336e2e7690.pdf
    • https://static.usrfiles.com/ugd/defcb2_efc8f6fbd4d84ccca5b2306c15d5ed84.pdf
    • https://static.usrfiles.com/ugd/b8c837_13e024c22b224f67929a160576ea031c.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/chromatic_scale_trumpet_finger_chart.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/alphabetical_reasoning_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/dokopugosazigozidolut.pdf
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/giza_cotton_sheet_sets.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/78385129625.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/canelo_vs_kovalev_live_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/identifying_types_of_pronouns_worksheet.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_off00005d24.bin
f5610568afe75ec6373b2c3164da22fe6d4be9dff6b0d72463eb958547446d54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D24 4984 bytes
font_01_sfnt_off00006e2a.bin
f3db47b4dec456914d5f551f5f20e86c93fb958bdb3c9fa9d6882c5fc80a18e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 11080 bytes

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