Malicious PDF — malware analysis report

Static analysis result for SHA-256 352e13bc9391b5a9…

MALICIOUS

PDF

45.8 KB Created: 2020-08-17 06:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb790ac2db8e13a56ff7e2387fa1e7e SHA-1: b2a26aab0c866e3f5ce82e83ea1d642aa941edf5 SHA-256: 352e13bc9391b5a9d89722026585b489758be63505b5799b0c5ea988ba13358a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=global+perspectives+individual+report+mark+scheme', is identified as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted from this sample.

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=global+perspectives+individual+report+mark+scheme
    • http://files.beexploration.com/uploads/1/3/0/7/130739369/05426.pdf
    • http://files.sandyrosswellservicing.com/uploads/1/3/1/4/131438541/9618016.pdf
    • http://files.hondurasmissions.org/uploads/1/3/0/7/130776611/lonos.pdf
    • http://files.martismixedmedia.com/uploads/1/3/1/6/131606636/soxamorulisi_rinuguliv_titovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/bhagavan_das.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/16084460188.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7504/files/easy_learning_english_conversation.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/36260098483.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/bezetar.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/carol_of_the_bells_leontovich.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/78930247525.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/about_foundation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f7.bin
68c748717e09691a4d9e8c5dd9285065d46b70de28ef69ff80aec0901860a075		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F7 5488 bytes
font_01_sfnt_off0000796b.bin
6bd712eec82a00c5973e0b84d8c0d7bf266c7b9b00b3aae0313e0cf9d1f949c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796B 10128 bytes
font_02_sfnt_off00009c09.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C09 4324 bytes

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