Malicious PDF — malware analysis report

Static analysis result for SHA-256 9222014cd84383a9…

MALICIOUS

PDF

47.0 KB Created: 2020-08-31 06:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb457743a84d4e7006c11c8b4e63ee01 SHA-1: 7285ae40b6a5dc4767896b6d796c8dd1ff2f9546 SHA-256: 9222014cd84383a9d2a118be084cb408ecf8e7f885ee5ec09495c2c7bdfe0987
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.ru/wix?keyword=jumpstart+for+dumpper, is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious infrastructure. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=jumpstart+for+dumpper
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/english_to_german_language_learning.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/95361636822.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/cidco_lottery_2020_winner_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3808/0167/files/guzisuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/55186873335.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/jhin_guide_s8_adc.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/music_worldwide_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/vetotirutoxukowuzoxelujab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/vapiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/foritagazim.pdf
    • https://cdn.shopify.com/s/files/1/0437/3138/6517/files/ic_86_risk_management_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/17410652369.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/wimiramukulafax.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/vemigegofoxosudexes.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_off000062f4.bin
af7eb413b1f38afe6f94bd91c3cfb2bedf358daa024c7076fa41cc89aaa6dfb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 5144 bytes
font_01_sfnt_off0000745a.bin
945e72c9206df0cd0bd753f5ef7b6c500869ab8852aa0072a30a6950b056f8a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745A 10192 bytes
font_02_sfnt_off0000975b.bin
f3cd070d81baa5f594f8ba753a89d13d58e05e8293bf21b7871d1e370e0aee2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x975B 16976 bytes

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