Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a2c5ffb3de2bef7…

MALICIOUS

PDF

41.4 KB Created: 2020-08-05 04:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09214e95672243ad995a8866659e5065 SHA-1: e507bd98d4bd053f4f16e92f2ef557049fa9daf3 SHA-256: 6a2c5ffb3de2bef7988c36264644cc07d78acc2d717b224bf79e6ba463b2e1a5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. The document body also contains this URL, suggesting an attempt to trick users into visiting a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the final destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=antrenmanlara+matematik+2+pdf
    • http://files.dknightwesmedia.com/uploads/1/3/1/8/131857920/zimudopadotadu.pdf
    • http://files.donandmargieabroard.com/uploads/1/3/1/0/131071076/f2b818fc74ed0.pdf
    • http://files.baanphitaktaweep.com/uploads/1/3/1/4/131437157/xetasu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/zepowizomolulab.pdf
    • https://cdn.shopify.com/s/files/1/0438/2700/3549/files/pepsinogeno_funcion_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/97619254997.pdf
    • https://cdn.shopify.com/s/files/1/0434/6226/2936/files/diwowotekukowegimulogo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/94795466470.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/fekisaviwodefujokuzosekok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/beduzakopanugudap.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/caballo_de_troya_9_can.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/fileexport_paper_sizes_google_app_scipt.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/cost_accounting_a_managerial_emphasis_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/pci_simple_communications_controller_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/67764752353.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055aa.bin
aa4ef77c8add7076073371fd90daaa718898632025b4e4e62b94135daea4c9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AA 5192 bytes
font_01_sfnt_off00006740.bin
4c5844a9147433268b61afebdd792e31ee23f34519d7c212e91911e5d382b826		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6740 16684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.