Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eec668793ca4dbb…

MALICIOUS

PDF

65.4 KB Created: 2020-08-02 23:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7950c18789ed6b5b4cc4df1c303f1fa SHA-1: 3e8955f9dde95f0e0d048e98e2428a2cb060fa24 SHA-256: 7eec668793ca4dbb1bb035f1fb0d28d0a45f6fdb59e082778f6c2ad998efab94
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=alchemist+dota+2'. Additionally, it features a PDF link farm with 30 external PDF links, many hosted on Shopify, indicating a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=alchemist+dota+2
    • http://files.balmoralscouts.org/uploads/1/3/0/7/130740517/nalozisalex.pdf
    • http://files.smartlinktechs.com/uploads/1/3/2/7/132740352/palovawipipo-gaxixab-zevutes-senafoxebasavo.pdf
    • http://files.sobochurchofchrist.com/uploads/1/3/0/7/130776120/tuvirabosigaguk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdf
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/wororufafub.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/vifivexizaxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/malarefuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/98575363727.pdf
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/how_to_get_size_of_array_c.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/31489442053.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/kaxowegewomejozaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/scarface_ps2_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0450/4194/2678/files/american_reunion_full_movie_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/tamodosapuxe.pdf
    • https://cdn.shopify.com/s/files/1/0439/7934/1982/files/47949819708.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/femitejegozake.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000982b.bin
a1d7506997c8f1d57125b2f558e316d4d58c8e58851948f1688b4aa7785f4b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x982B 4884 bytes
font_01_sfnt_off0000a8bc.bin
465b41cc8fc5fa034337f14aa62a1e32dac8ce7fd8176ee22e01d116919d4f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8BC 13872 bytes
font_02_sfnt_off0000d48c.bin
e1fcaa290bc8b5aed85f312864440120c61db6abd2add9737883d56687aaee62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 16232 bytes
font_03_sfnt_off0000e9a9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A9 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.