Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e0514bf07e3c22…

MALICIOUS

PDF

40.7 KB Created: 2020-09-04 04:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2173b84a49c1a662dbae4644d4746b2f SHA-1: 4146d7f3156181099c66ac03c4a763882b1fe3ff SHA-256: 84e0514bf07e3c22a3877a7aaa67dbd92a236f63f3a5d701025422e5fea22b29
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. The presence of a 'download button' heuristic further supports the lure. The primary malicious IOC is the ttraff.link redirector, which likely leads to a further stage of the attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=extra+newspaper+template
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/sojoberagas.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/ruxerulumixuditanox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/food_chain_worksheet_1-_a_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/50194907915.pdf
    • https://static.usrfiles.com/ugd/7dd30d_84ad77b9944b46bdb75a6eecabc5a5e1.pdf
    • https://cdn.shopify.com/s/files/1/0437/9551/3505/files/edit_files_in_sharepoint_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/10238384598.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/bawowexuzazi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/78096551725.pdf
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/72020353425.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/sezawuwiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/pajelubamipexajovon.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_off00006284.bin
ebf95bbfdced2f5e55d03fb07f7216d49f9ef99bea2523fcb150c0be7dee3e7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6284 5084 bytes
font_01_sfnt_off000073d1.bin
ee35b06a3065a72f508e7b56b81c9db2dac10d21058fabd6ea6aa7910a3b8a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 10136 bytes

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