Malicious PDF — malware analysis report

Static analysis result for SHA-256 358f72015d34d8f4…

MALICIOUS

PDF

42.6 KB Created: 2020-08-01 05:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b70a6e3bc9907575e223fa98d199575 SHA-1: 366a2bbe819ca9cf7e18af7f983c7b0a3e773289 SHA-256: 358f72015d34d8f49702d163092bcc5c8bf7d4f862883f52732aa6cda1740bf3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.ru' with a keyword suggesting a scam or phishing lure. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=how+to+refill+zippo+lighter', indicating the document's intent is to trick users into visiting malicious infrastructure. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm for SEO manipulation or to obscure the final malicious destination.

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.ru/pify?keyword=how+to+refill+zippo+lighter
    • http://files.carolinerosenblum.net/uploads/1/3/2/6/132682974/bb91034cb84d6.pdf
    • http://files.mattituckpack39.org/uploads/1/3/1/3/131383586/ginijowelipufafufole.pdf
    • http://files.lifeplots2.com/uploads/1/3/2/6/132695213/25d2d172db.pdf
    • http://files.hepto.org/uploads/1/3/1/6/131637853/04c92bf655dac4.pdf
    • http://files.onlinemobiletrainer.com/uploads/1/3/1/0/131070674/677925ed564ac5.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/fepelupewajonexogebu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/fexisuwiweb.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/2239499870.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/ems_tracking_china.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/37503480042.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/59550210490.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/43896845256.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/13230380725.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/13518370399.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/selarovofevojepaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/3600/6817/files/latidadapovij.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_off00006964.bin
dc903fc267e0fe21db47530cc17912576cecf805d96b5bd8a8b4450a5b609b93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 4880 bytes
font_01_sfnt_off00007a17.bin
0d5dd1e74c008e24edf34dedc1e8bb1783563345db6a7fa3f167d383ab660545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A17 10440 bytes

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