Malicious PDF — malware analysis report

Static analysis result for SHA-256 f614e7d1276f07fc…

MALICIOUS

PDF

46.4 KB Created: 2020-08-12 00:31:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503bdee017548276252263b82bf52e4f SHA-1: 8bb69149627238ed449ea9526f36d656aa817afd SHA-256: f614e7d1276f07fc38b9e97b4f1e19cd96904411eb883ab534b09ed58ddcdeb1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files. The document body, though partially corrupted, contains a URL that appears to be the primary lure, disguised as a research paper title. This suggests a social engineering attack aimed at redirecting users to 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=physicochemical+factors+affecting+drug+absorption+pdf
    • http://sadudo.ashtynnewbold.com/uploads/1/3/0/8/130873952/1c5e25c50c.pdf
    • http://files.voidedpixels.com/uploads/1/3/1/0/131070051/6082217.pdf
    • http://guwifubej.newdayforthetao.com/uploads/1/3/0/7/130776542/nunabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/jinesojukuginetariwura.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/keduluwajodapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/32685789689.pdf
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/65414192943.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/41701353466.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/swedenborg_spiritual_diary.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/84891841706.pdf
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/piratolalapuzutised.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/87142600895.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/business_english_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/fufizunugaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/sukud.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_off0000724a.bin
35c23872c5058e10095538a3e620296fc5dff0e461ac13f1c225ff762d4a058e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724A 5812 bytes
font_01_sfnt_off000085e2.bin
5b65872f91060b1448634ee2695ccc0bb50812a408eaa8c956e7e6e56ace04d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 11780 bytes

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