Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6d8a289b1f3497…

MALICIOUS

PDF

42.2 KB Created: 2020-08-26 23:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ea2279eb8c5f660e898a5fb00e092ff SHA-1: 1140ea0226f6cedd1925c060637840101e0cf3c6 SHA-256: 2c6d8a289b1f3497bd001e19c00f7612c139210d8398031870efb7be0a91bedc
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that lead to a redirector service known for malicious activity. The document body and heuristics suggest a lure, likely a fake ebook, to entice users to click the malicious link. The presence of a link farm further indicates an attempt to distribute malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=breatheology+ebook+free
    • http://files.elbuencacao.com/uploads/1/3/1/4/131409074/f2006a83c95f.pdf
    • http://files.whatwouldateacherdo.com/uploads/1/3/1/3/131381044/falogazonulijaw.pdf
    • http://files.andieileenphotography.com/uploads/1/3/1/3/131384424/nabesukebomepag-vasenur-nadesugowog-kerusabuzorol.pdf
    • https://cdn.shopify.com/s/files/1/0440/0339/3694/files/hey_soul_sister_ukulele.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/rokijixim.pdf
    • https://cdn.shopify.com/s/files/1/0432/9265/5780/files/tosip.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/simple_business_continuity_plan_template_australia.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/49857858819.pdf
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/48495094145.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/keto_diet_recipes_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/suketivedagejefaxadojola.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/fnac_report_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.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_off000067eb.bin
cc8b1a2efd44ca455efea569147dd36d2ad9b5d1be7e98855e7d85955c8bece8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 5204 bytes
font_01_sfnt_off000079ac.bin
e40e0c1d40b92a9b12ae40e4daf16443562eda26ce18330fdcbbdc2457717324		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 10188 bytes

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