Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ecaab11727d4f8…

MALICIOUS

PDF

44.1 KB Created: 2020-09-18 21:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8baf2b8d12f0f12b94e1ac225066e132 SHA-1: c545c2598b267e7dea80cfcf13b7a4b41d8cb1f4 SHA-256: 56ecaab11727d4f8576264d501bf781ea61b01dd57949266f5ed7e798fb93fb9
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the document's primary purpose is to trick users into visiting this malicious URL, likely leading to further compromise.

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.link/wix?keyword=rational+choice+in+an+uncertain+world+2nd+edition+pdf
    • http://files.marilynkelley.net/uploads/1/3/1/6/131637226/94bd7096382c3.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/da_5960_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/69035462970.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5404/files/sathuranga_vettai_2_full_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0460/0348/6879/files/mandated_reporting_laws_maryland.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/4474033801.pdf
    • https://2347d01f-a141-4318-93f1-c4426636b895.filesusr.com/ugd/d2759c_e9daea5e7ef942e88b4c757bbae49e22.pdf?index=true
    • https://62940d22-ee65-410f-ae17-8306309c5867.filesusr.com/ugd/4cd51e_b0e9d7d07d25454d8417b03b87a8edab.pdf?index=true
    • https://7c2edb85-0445-4d9b-b469-91a4929a018f.filesusr.com/ugd/668a47_0118705a01014d3ea98ed50a111027cd.pdf?index=true
    • https://10e3fc99-8bdf-42ad-9b09-3727cbe75bcc.filesusr.com/ugd/4d548e_0b2d1394c4644f6886ec66cb6409d67d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/dipudidanugojiguvopugar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/28566267445.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/gajaguvokatelefuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/despacito_ukulele_fingerstyle.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_off00006e94.bin
b654f94ebd3949ac5cb59cdd42b44319eed4ae7d45c713358acea67d332ff822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E94 5296 bytes
font_01_sfnt_off000080ae.bin
f5d0f1551587a58b2dcb858479920829386eb55c9f06716040771453838c2856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80AE 10128 bytes

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