Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbfd138105f2d6a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 03:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5e453f524c59b288cc6c10b43067dd SHA-1: 32f78b4ac11cab99ffbccc063475e80648d0ff79 SHA-256: 2dbfd138105f2d6aa8e06216d2a077c9aea69702406bc787616672a9820e5e6d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=adobe+reader+dc+vs+11'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDF files hosted on platforms like Shopify. The document body, though heavily obfuscated, contains references to the redirector URL and a Shopify URL, reinforcing the malicious intent. The primary attack pattern involves redirecting the user to malicious infrastructure.

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/pify?keyword=adobe+reader+dc+vs+11
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdf
    • http://lolekumug.geoec.org/uploads/1/3/1/4/131452903/8240963.pdf
    • https://cdn.shopify.com/s/files/1/0450/5698/3192/files/27460012276.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/pegabozozagufoti.pdf
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/renault_blaupunkt_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/busabos_ng_palad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/sivasizab.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4885/files/38412018786.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/pipefiluzofipivip.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/fixawuwozopedibebi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/2016_ford_f150_manual.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_off0000654b.bin
8f66ea1155b7918979ca20aa2c8ae05cffc8212c41f84f2bc9f29a8cd897a69d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654B 5144 bytes
font_01_sfnt_off000076dc.bin
6152df3e0058e3f4c8a646c110c1ef90aae6210a3eb184e960dbc5d7b309cfca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76DC 10500 bytes

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