Malicious PDF — malware analysis report

Static analysis result for SHA-256 36647f32a96bef91…

MALICIOUS

PDF

41.4 KB Created: 2020-10-30 14:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598476f65f75121a52d7238be5327a0c SHA-1: 12b3d6c91f6f6b610fa7921eaa20e0798b6a0d4d SHA-256: 36647f32a96bef91a4978d83c8df59b6d7bd54971c4e20ca82307c53985e0b02
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://ggtraff.ru/aws?keyword=jrotc+military+ranks' is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, likely as part of a phishing or malware distribution campaign.

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://ggtraff.ru/aws?keyword=jrotc+military+ranks
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f87f478d49e1.pdf
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f9764c1944ea.pdf
    • https://cdn-cms.f-static.net/uploads/4404965/normal_5f95b37bf1303.pdf
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8f8bf45988f.pdf
    • https://cdn-cms.f-static.net/uploads/4403684/normal_5f970f8a5cfc1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8a85b02c-f0fa-4240-b6ba-8f7f6d0dbce7/mitsubishi_forklift_fd30nt_manual.pdf
    • https://uploads.strikinglycdn.com/files/e087f236-6c27-42a2-9d9e-1b72ee440a33/what_does_atl_mean_in_a_blood_test.pdf
    • https://cdn.shopify.com/s/files/1/0497/4093/9423/files/tarajudigapetijanujoxej.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/biokleen_bac_out_laundry.pdf
    • https://cdn.shopify.com/s/files/1/0504/1461/6752/files/kaukulan_ng_pangngalan_worksheet_grade_6.pdf
    • https://uploads.strikinglycdn.com/files/5e5bcb01-7d48-495e-bf8a-3b3ad28b4f0d/amca_telefon_alyor_indir.pdf
    • https://s3.amazonaws.com/wibedubosateg/angiospermas_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0482/4878/3010/files/music_stave_paper.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_off000064d2.bin
5f823c7125040bc037c8972e1f54abd08f93152b00a9e0f1607173810650953a
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D2 5100 bytes
font_01_sfnt_off00007622.bin
320ddd6aa9feb0258c46d6b23f22d44a76b35082a9d23848948421baad4a9798
pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 10576 bytes