Malicious PDF — malware analysis report

Static analysis result for SHA-256 95df72fc3c7e96b0…

MALICIOUS

PDF

32.4 KB Created: 2020-08-17 05:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aea0167a6cc334aaffc3a719a45b8fe0 SHA-1: 331edae9a8f62c140c6d6dedc8a47a3cfcfb1459 SHA-256: 95df72fc3c7e96b04f772ebba122ba2e98b1949ac6e78e56c4b76e9af509d20d
150 Risk Score

Malware Insights

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

This PDF file exhibits malicious characteristics, primarily through its inclusion of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the embedded links, specifically https://ttraff.com/pify?keyword=weather+report+chehalis+wa, points to known malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a deliberate attempt to create numerous links, likely for SEO manipulation or to broaden the attack surface. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this document. The overall pattern suggests a lure document designed to redirect users to potentially harmful sites.

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=weather+report+chehalis+wa
    • http://tojanilak.draiochtshoppe.com/uploads/1/3/0/7/130738970/fudon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0274/files/book_cover_design_template_vector_illustration.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/zozizegovemuwigudu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/woofy_sinhala_cartoon_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/44689528275.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/shakespeare_sonnet_18.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/16028031761.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/32291387730.pdf
    • https://cdn.shopify.com/s/files/1/0433/0917/0856/files/68933157150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/nox_app_player_android_emulator_system_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2781/files/barbeau_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/42801756419.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_off000043eb.bin
6c080044d7cac1d027a91fa256b6cae260cca04e47834e9adbf74b940f5a972d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43EB 5128 bytes
font_01_sfnt_off0000556b.bin
cc835314699a9b3bdee75d4ac44bfdd36352e63c0d2c81f268d640f0204d2601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556B 9288 bytes

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