Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee70668e1887512…

MALICIOUS

PDF

38.4 KB Created: 2020-08-26 06:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7c1163569b7c3c943a66505bb22acfc SHA-1: fe4d5f195c4e02d1901db82767c46a62e594e998 SHA-256: 8ee70668e1887512c1ec4f38ad21c551a79d5840e5050a04430d80b173015088
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=the+guild+2+renaissance+beginners+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=the+guild+2+renaissance+beginners+guide
    • http://kabejo.jamattice.com/uploads/1/3/0/7/130738970/figinusitugimidusube.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/4457974180.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/biochemistry_basics_pogil_extension_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/53118208401.pdf
    • https://cdn.shopify.com/s/files/1/0433/9741/5077/files/vubalatefajinefojav.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/22543216401.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/zomisu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2717/files/22698723030.pdf
    • https://cdn.shopify.com/s/files/1/0440/4923/6118/files/pelofimew.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/7150027429.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_off00005ab3.bin
4aacfa496b7469f6bd3c1dee9d3385cf654501602ace806d51d9a110ec15bea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB3 5424 bytes
font_01_sfnt_off00006d0b.bin
8b198fb4220775f4bd63c28433d35f2e6ebac341c3718abbce86142433289eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 9428 bytes

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