Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4525c738a02d5bc…

MALICIOUS

PDF

51.9 KB Created: 2020-07-25 16:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77a947aa7c5d43fcb3a7a483c68f5351 SHA-1: 89a3df0fcbc624c1ae1ec65c11aa80cf82f1e7ea SHA-256: d4525c738a02d5bc1bd256af9d71ff4c00cf28e4ed748c4fb031bbbb4949a8b7
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Android data usage warnings'. The primary malicious URL identified is ttraff.ru, which is likely used to redirect the user to a further malicious destination. The presence of numerous external PDF links also indicates a link farm strategy.

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=avertissement+utilisation+donn%25C3%25A9es+android
    • http://files.heresthedeal.co/uploads/1/3/0/9/130969689/tedavoxavu.pdf
    • http://files.revelstoketheatrecompany.org/uploads/1/3/1/4/131436956/lofiwetegajo-diner.pdf
    • http://files.bristol.co.nz/uploads/1/3/1/6/131637546/xezafolipuk.pdf
    • http://files.ccsb.danafarberdev.org/uploads/1/3/2/3/132303219/4e1c36536d7800.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/59957705387.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/45689897473.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/rutudovitunure.pdf
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/79106923436.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/33181432582.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/23176284978.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/84082908358.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/84517300681.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/2934291961.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/99803057264.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_off00007527.bin
a01592dc0ffbe895a8aed3c392aaadf68af5e71580752b09cb79436dfaaedc90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7527 5044 bytes
font_01_sfnt_off000085e2.bin
ce2bdda309539f3d063d349c260ae8bfa43d6979a98744ba300711e435b8ceae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 11732 bytes
font_02_sfnt_off0000aadc.bin
591c796ad5e02d6de9fb83a5f5554ceefd95323591fa56c7602a80824882357f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAADC 16140 bytes

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