Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55cd459d0b00e17…

MALICIOUS

PDF

37.6 KB Created: 2020-08-19 01:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3b39f678771caba3e43bd0bdc756695 SHA-1: f24c74c35925af60e3153ed57804c28b788eadcf SHA-256: e55cd459d0b00e1745ba7e2e025dc55c8e5e8ed6fbabdf5cb570f1bdc8e1bc75
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to a Canon printer and the malicious URL, suggesting a lure for users seeking printer support. The primary malicious URL is https://ttraff.com/pify?keyword=canon+printer+mx922, which is likely used to redirect users to further malicious content.

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=canon+printer+mx922
    • http://nuzeves.lehoangviet.com/uploads/1/3/0/8/130815137/6907316.pdf
    • http://wudivamar.worldsbestpinotage.com/uploads/1/3/1/0/131069899/6e04e0bf.pdf
    • http://files.artedelaura.com/uploads/1/3/1/3/131383934/9252528.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/tiwarowe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/global_trends_in_human_resource_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/9113/2567/files/mnemonica_stack.pdf
    • https://cdn.shopify.com/s/files/1/0448/3701/1613/files/java_12_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/synonyms_dictionary_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/joker_graphic_novel.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/totazowefematuzisusubew.pdf
    • https://cdn.shopify.com/s/files/1/0433/2155/7147/files/transmitter_calibration_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/kemoluwixedozaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/26064797600.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/jofikuzolegano.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/gudonivapatolirusilu.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_off000056cd.bin
24470b18d077b68fbca0c816a208ab28fb768fe62043890d877f0f3350ac6ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CD 5016 bytes
font_01_sfnt_off000067ce.bin
db298ef26b2611801ebe6088a5075ff27b7adca969ae4db2ef15cabf4cc64472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67CE 10008 bytes

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