Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c951e14175fa160…

MALICIOUS

PDF

34.2 KB Created: 2020-09-07 08:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0348f17b5e5959ee7ecbd996306417c3 SHA-1: 0a1815b9b4da37c3ce62156b388a0e37527a2e8f SHA-256: 2c951e14175fa160fdeeb9b7ae897ff05d74428e11c93cee5471ee63e6cf4905
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. It also exhibits a PDF link farm heuristic, suggesting a tactic to distribute malicious content. The presence of a 'download button' lure further supports the attack pattern of tricking users into clicking malicious links. The primary malicious URL identified is https://ttraff.club/wix?keyword=chu+chu+tv+number+song+free.

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.club/wix?keyword=chu+chu+tv+number+song+free
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/voreziwomekugefujax.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/tokubagazesobejaxoxipe.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/copper_pickaxe_stardew.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/wefesuvividu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/zuxibavopatimedivudolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/xanaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/coulombic_attraction_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/dewerimejax.pdf
    • https://cdn.shopify.com/s/files/1/0437/2470/1847/files/lekaridenufowudizunojorux.pdf
    • https://cdn.shopify.com/s/files/1/0454/2503/3372/files/agilent_1100_hplc_binary_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/lipolutuzemagaboni.pdf
    • https://cdn.shopify.com/s/files/1/0462/1061/3401/files/24962115069.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_off000046fb.bin
2823c64d1666d07eb1592f1c3ddab889d8e5ea6a41d67aeaeb8e783de9f9c9c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46FB 5160 bytes
font_01_sfnt_off0000586a.bin
8e1567c18931bdb3cc1c34e2c41d55d0890213f0e7a9226acb6ec4966847d9e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586A 10524 bytes

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