Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f62931282cd4cbd…

MALICIOUS

PDF

44.1 KB Created: 2020-09-01 13:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d641ae47d0a05064e068600ee567e77 SHA-1: 28795d2db0280a885292213c57e786b16b1ac6fb SHA-256: 8f62931282cd4cbd33f0b58453bbaadb3a953c4ad4783d713c204603bac9d71e
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, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=coronal+polishing+is+performed+which+which+instrument', is flagged as a malicious redirector. The document body appears to be garbled text, but the presence of the malicious URL and the link farm heuristic strongly suggest a phishing or malware distribution attempt.

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.cc/wix?keyword=coronal+polishing+is+performed+which+which+instrument
    • https://static.usrfiles.com/ugd/756799_1949d3bcdb464f4c83f5ac1856791af7.pdf
    • https://static.usrfiles.com/ugd/b8c837_fab79a6cf2c04f6d8e323205cf5fa476.pdf
    • https://static.usrfiles.com/ugd/2f07a1_096f2149e1474f9e8e537306f66151ce.pdf
    • https://static.usrfiles.com/ugd/89064d_0f2321aab9774570bed26d300e689446.pdf
    • https://static.usrfiles.com/ugd/63d3ad_e8144d0d62264f3ea910c951387fce17.pdf
    • https://static.usrfiles.com/ugd/defcb2_6d1f353b1a654a0ea11fd1a5097d8275.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1b3d97bc48f497abe3862f8b9e863d5.pdf
    • https://static.usrfiles.com/ugd/6d59ab_f2c81fb400b44583a4bd5cbd38ee86cc.pdf
    • https://cdn.shopify.com/s/files/1/0469/0595/0368/files/guvugejojepinasapinamas.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5159/files/98459357155.pdf
    • https://cdn.shopify.com/s/files/1/0463/2490/8193/files/gujivegijefawix.pdf
    • https://cdn.shopify.com/s/files/1/0462/6386/1405/files/break_free_from_plastic_report.pdf
    • https://cdn.shopify.com/s/files/1/0462/0812/3033/files/gukom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/81489496168.pdf
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/16326867388.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/best_photo_editor_free_app_for_android.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_off00006dc3.bin
f74d065264e60e4194d9f1640181db90b494ceb33fe5fd0bcce577731924e6e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 5564 bytes
font_01_sfnt_off00008097.bin
185b9780db2277d17bd4be4509226d94639a4f345eeca17689822662465a8ec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8097 10112 bytes

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