Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae181a7f0c74690…

MALICIOUS

PDF

41.7 KB Created: 2020-08-28 08:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14b782c5b3390f1d4432d8b899f8350 SHA-1: b4b724f7372f684f4d7c30a14d25f9f894116c6e SHA-256: 3ae181a7f0c746909074f5962061f50f379bd2d889b3d5b05d755f0cfe3b3a97
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to manipulate search engine results or distribute malicious content. The presence of the malicious redirector URL further supports the malicious intent.

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.com/pify?keyword=breville+smart+oven+reviews
    • http://zotesesaz.palmsrealty.org/uploads/1/3/0/9/130969808/ladifabi.pdf
    • http://palaguw.marronkennels.com/uploads/1/3/2/3/132303027/4214307.pdf
    • http://sonuru.saxophonistforhire.co.uk/uploads/1/3/1/4/131454012/fe1e2f9ffcb.pdf
    • https://cdn.shopify.com/s/files/1/0428/1516/0487/files/sri_rudram_meaning_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/aromaticity_antiaromaticity_non_aromaticity.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/zisepexilulejukijeziwar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/7406329036.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/21870480923.pdf
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/quantitative_analysis_of_market_data_a_primer.pdf
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/jurovajewapurarepuxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/engineering_physics_by_avadhanulu_and_kshirsagar.pdf
    • https://cdn.shopify.com/s/files/1/0430/8022/0823/files/valve_guide_puller_tool.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/alfabeto_fonetico_ingles_americano.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/17793388182.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/51431669362.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_off000066df.bin
2f6033aca3913f1ca235aa6e9d6ce88d2f5f93f31207932beafdaaa321ecaacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DF 5032 bytes
font_01_sfnt_off000077f8.bin
9d5476de8fb919a01014a40f543182d0fb3cc9535f3845b2e66fd533bebfce02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F8 10056 bytes

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