Malicious PDF — malware analysis report

Static analysis result for SHA-256 266781ae3c3f572f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-14 07:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5db1f73ca6bf53df617bd58a0eff6134 SHA-1: 587cc12b05d4e18d407f3357ac0187a68c7f0415 SHA-256: 266781ae3c3f572f0a1c18d7507734a04ba4df5b01ad518fdbc25cb5fa86fa2a
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains the text 'Lipid lowering guidelines 2018' and the URL 'https://ttraff.ru/pify?keyword=lipid+lowering+guidelines+2018', suggesting a lure related to medical guidelines. The presence of numerous links, including the malicious redirector, indicates an attempt to lead users to harmful 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=lipid+lowering+guidelines+2018
    • http://files.kadencekreations.com/uploads/1/3/1/8/131872015/5a6d2b845fb979.pdf
    • http://files.frenchcreekdiscgolf.com/uploads/1/3/0/8/130874411/3010091.pdf
    • http://files.globalstrikemedia.com/uploads/1/3/1/8/131856306/sutefajenakomi-bixijibovekekat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/garamadekazigipiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5034/files/php_header_xml.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/human_barbarian_5e_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/don_t_believe_me_just_watch_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/agricultural_economics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/72133049932.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/gonumekebojizatukibogape.pdf
    • https://cdn.shopify.com/s/files/1/0431/5060/6497/files/12766147493.pdf
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/motaragipoje.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/6864966523.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/91925490609.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_off00006088.bin
72ebfe7463c42631ae274d1b94529d498c0a9c8f9f745a5a385f9dbe5d293dd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6088 5468 bytes
font_01_sfnt_off00007355.bin
70c00f17ee16b66a3600c480e5bd419e295eeda5be46390f887a74ce1e9c3c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7355 10512 bytes

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