Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe45d084d1ac26fe…

MALICIOUS

PDF

48.9 KB Created: 2020-11-07 01:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8e6e6dbe42a319979a5fb414663fd4c SHA-1: 754d423872f673f9ba17f978a49a92452b5ebb98 SHA-256: fe45d084d1ac26fe00acae8f13c6e84cc8fb5bf6e524e26ddd73812853e8e8bb
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?keyword=intermatic+eh40+manual'. Additionally, the ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

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.
  • 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://traffmen.ru/aws?keyword=intermatic+eh40+manual
    • https://wuwejinetuna.weebly.com/uploads/1/3/2/6/132681176/genoderorigomeb_wetebobufonesu_borarutozamu_pojuli.pdf
    • https://jarofudi.weebly.com/uploads/1/3/1/4/131408364/lobekuroxoxidutojaju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wazorixekunafob/1789632880.pdf
    • https://s3.amazonaws.com/paxuvagal/2176484857.pdf
    • https://s3.amazonaws.com/fedufiporara/82139496241.pdf
    • https://s3.amazonaws.com/leguvefu/54477281867.pdf
    • https://zusanovo.files.wordpress.com/2020/11/86937954889.pdf
    • https://s3.amazonaws.com/muwemivumazulax/71919336396.pdf
    • https://s3.amazonaws.com/lovetijif/81669378525.pdf
    • https://zapawex.files.wordpress.com/2020/11/the_crucible_multiple_choice_questio.pdf
    • https://japukijoj.files.wordpress.com/2020/11/piwefuwaroribaguzurew.pdf
    • https://s3.amazonaws.com/mokuwanibof/16725662417.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007850.bin
0d4fa5a912db3aa79b424a00557877b134a635f54fc11081afeefe256c81ad70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7850 5028 bytes
font_01_sfnt_off00008937.bin
528b993db0a14dbac951cbbf1c8cd5e2d483639a6cd4fb45b371011dad70b13a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8937 13684 bytes

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