Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d73e15c2a73c990…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 17:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82a482467c439e062edb75ece6e94b5e SHA-1: df2622aae6f2af3d39ea6711fbcadcf2e2b306b9 SHA-256: 4d73e15c2a73c990b555d1d2998b4d0d56c07248e2104ab2e8d68a53cabc5a10
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to funnel victims to a malicious site. The document body and embedded links suggest a lure related to 'current affairs awards and honours 2020 pdf', aiming to trick users into clicking the malicious link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=current+affairs+awards+and+honours+2020+pdf
    • http://files.shoptwothreefour.com/uploads/1/3/2/6/132682124/2c59e22774.pdf
    • http://munix.sanctuaryofwellness.ca/uploads/1/3/0/8/130814328/5669265.pdf
    • http://files.meganssewingroom.com/uploads/1/3/0/8/130874063/7413376.pdf
    • http://files.maapparel.com/uploads/1/3/0/9/130969727/ziwafalotiseruw-sevabivinoxa-sujira.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/varonibufubodenim.pdf
    • https://cdn.shopify.com/s/files/1/0451/9487/0935/files/21983119445.pdf
    • https://cdn.shopify.com/s/files/1/0435/7029/9038/files/momotaravedopepog.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/aakash_aiats_question_paper_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/89213604985.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/93219898425.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/36940065361.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7544/files/55416407534.pdf
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/jatixofijemotazonus.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/3362803533.pdf
    • https://cdn.shopify.com/s/files/1/0448/8983/3639/files/compuestos_inorganicos_agua_y_sales_minerales.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_off000066de.bin
ae1dd246bc6dcb6c3e8683945b0ab35da5cd7ea25030e33bbfabe9caf80e6e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DE 5368 bytes
font_01_sfnt_off00007927.bin
0cd82bf457bba21b27eb2c0ef321bc96dcbb55d8ccfa1c2171f56ee3b51e102e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7927 14744 bytes

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