Malicious PDF — malware analysis report

Static analysis result for SHA-256 61fc4a2d26d1142a…

MALICIOUS

PDF

62.2 KB Created: 2020-09-04 21:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50392cc7e4204bccb2638c7203990e68 SHA-1: 3ffa7b7c265f7915c48efadf106765bfe6a42acb SHA-256: 61fc4a2d26d1142ac3f3b0d6f5f940610caa398d91eb79200a91747d0b009189
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a download for 'Canon imageclass mf3010 toolbox'. This link, 'https://ttraff.me/wix?keyword=canon+imageclass+mf3010+toolbox', is identified as a malicious redirector. The document also features a large number of embedded links, many pointing to PDF files, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=canon+imageclass+mf3010+toolbox
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/35ddae_7a9f9cb0e2184d308abf07e7020c0f0b.pdf
    • https://static.usrfiles.com/ugd/314c35_01b135720e604c52899827467a075ff6.pdf
    • https://static.usrfiles.com/ugd/d32f78_7e2e4e00feea4d6b907221b1fad4ed54.pdf
    • https://static.usrfiles.com/ugd/b65acf_7c07c55c3d8044fbb766c463e97c6f93.pdf
    • https://static.usrfiles.com/ugd/b09e1d_6166a00edc814fcf94cae9c6a7da76e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9cca24ff3784981981835209f8035c0.pdf
    • https://static.usrfiles.com/ugd/87fdc7_0574c9fca9b64a8aa8931d2eced2c2c6.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_69a14429f6284c0fb0b472a8aefbf1da.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_96f3d10aa5644dc4b7832572b8f4d0eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_955a13aea1074fa1b367fd6c49cbe768.pdf
    • https://static.usrfiles.com/ugd/89363e_a7255256b6984cf2af240cc662c734f5.pdf
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/34105887404.pdf
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/zelavozapizexubalowura.pdf
    • https://cdn.shopify.com/s/files/1/0463/3182/2237/files/23129489570.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/calidad_total_y_productividad_tercera_edicion.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b24.bin
71a3002be01576b44e8845fa2144a1200aa61cd3e953a3145e6c652ba05c7655		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B24 23724 bytes
font_01_sfnt_off0000b370.bin
b1df06e62ac976de514b4b8d580715858f4c273db25d2e252c55b2edf61e8f0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB370 5576 bytes
font_02_sfnt_off0000c666.bin
ab602b523bb4c57ae771be50c4d9fdd929f85e633a0c2eea16ba4c4e4c84734b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC666 10296 bytes

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