Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f9090519acf0c1…

MALICIOUS

PDF

45.5 KB Created: 2020-08-25 14:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b786917344c72f1efa4b18645b1e32d5 SHA-1: 2cee3dd53bce26e06e0e0ce5443e96f3a8626393 SHA-256: 56f9090519acf0c1a4177005724148e084c16b641551d742c93ea73888faedba
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains URL fragments that suggest a lure related to 'canon ipf770 parts manual'. The presence of multiple PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to redirect users to harmful 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+ipf770+parts+manual
    • http://files.hmtaptf.com/uploads/1/3/2/7/132740836/1732642.pdf
    • http://files.zone-studio.net/uploads/1/3/1/3/131379709/magob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/cymera_apk_old_version_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/86251349134.pdf
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/noberij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/messenger_lite_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/83599819462.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/tubetofodixirivo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/nuvataxoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/4617667836.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/xazifone.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/pesoramunu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5423/4785/files/rearrange_page_order_in.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/ink_master_full_episodes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066aa.bin
de48465e6e27211258a15db2510a219198db6874ad602744b447e75ee542f60f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 5056 bytes
font_01_sfnt_off000077b9.bin
66346bf454e0eed754fac3516377b8dc4fe19ba5966eaa71133527f9fe8f8b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B9 10628 bytes
font_02_sfnt_off00009b6b.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B6B 4324 bytes

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