Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b11e66d4837d5d4…

MALICIOUS

PDF

41.8 KB Created: 2020-11-03 02:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e10b4fcf8465ab2784447e3a4fabae2 SHA-1: 185a460598e1837153f7955f5cb19858e0d17d9c SHA-256: 9b11e66d4837d5d48f13d315ab6f105ed300eb9196cdf60683897ee928c69d62
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ttraff.link/123?keyword=fnaf+1+office+door' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious redirector strongly suggest an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

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://ttraff.link/123?keyword=fnaf+1+office+door
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8f83b90a50b.pdf
    • https://taferirufip.weebly.com/uploads/1/3/4/5/134582969/duragijuvi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/widofafane/witexera.pdf
    • https://uploads.strikinglycdn.com/files/7ea49d7f-d5d5-422e-89c2-57159490ef41/wunibadasowasoxofegozi.pdf
    • https://uploads.strikinglycdn.com/files/8fd7c672-d10e-40f2-9173-b8e09a54913d/blank_yard_signs.pdf
    • https://uploads.strikinglycdn.com/files/1ff3937f-22d5-4ae1-91e9-0612cf9e4b98/biduxazeparupopig.pdf
    • https://cdn.shopify.com/s/files/1/0503/1703/3657/files/75025212592.pdf
    • https://s3.amazonaws.com/kakef/34968503408.pdf
    • https://uploads.strikinglycdn.com/files/4c5529a6-2c1d-4a69-a535-a23f2b727f91/27678480154.pdf
    • https://uploads.strikinglycdn.com/files/7f37a982-0fda-44a5-8463-57920dceca12/25551456778.pdf
    • https://s3.amazonaws.com/bikikanafopavu/computer_architecture_arm.pdf
    • https://s3.amazonaws.com/roware/amore_e_psiche.pdf
    • https://cdn.shopify.com/s/files/1/0506/1505/8608/files/mysql_drop_table_if_exists_syntax_error.pdf
    • https://s3.amazonaws.com/fekazudabo/possibilism_example_ap_human_geography.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_off00006800.bin
d7f2060b4ea4fc59b97b0efdc19efde0621c2e329f31c00c0cbbfc870e8c351f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6800 4812 bytes
font_01_sfnt_off00007876.bin
0a5332b1b49ceda391d0b903c22e12542b6887f7122b273b1d3e8aa0a93bfe8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10060 bytes