Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a99e9405ba80789…

MALICIOUS

PDF

45.0 KB Created: 2020-08-06 13:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99035cdfc76b99cbbd7ee3db4fe7dec8 SHA-1: 3c6a9547a7a79d70adf7d0e0948ffff91f389995 SHA-256: 0a99e9405ba80789a7bc911cbad967b2705fc12abe14f7050ec8e7e141f37820
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm designed to manipulate search engine results or distribute content. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), suggesting a malicious intent to redirect users to harmful sites. 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.cc/pify?keyword=glandular+system+pdf
    • http://files.jarpromotion.com/uploads/1/3/2/6/132681245/mevoz.pdf
    • http://ditebema.ucmun.com/uploads/1/3/1/6/131606027/552904.pdf
    • http://files.escapingfantasyland.com/uploads/1/3/1/4/131453602/4202a.pdf
    • http://files.smokyridgecoffee.com/uploads/1/3/0/9/130969237/7221826.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/somajuzukogitewepuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/78535094793.pdf
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/60565980771.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/wofus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3023/9642/files/1293907286.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/azkar_sabah_islambook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/berivujozu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/64542545204.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/98354736922.pdf
    • https://cdn.shopify.com/s/files/1/0437/6032/0669/files/31342348428.pdf
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/zenoxebezevuma.pdf
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/12114265656.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/ceh_official_certified_ethical_hacker.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fb0.bin
45dbd16d3c03f92e79a3fd3e72008094a3a37ae27544f0d9f651467380a0e0e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB0 5320 bytes
font_01_sfnt_off000081bf.bin
9d62c93bb17c20a6a2c901583cd160b47ace119c5f2b1ebcefdc1ca94403e5c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81BF 11000 bytes

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