Malicious PDF — malware analysis report

Static analysis result for SHA-256 df58e4b4280b67e8…

MALICIOUS

PDF

40.9 KB Created: 2020-11-05 23:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc80e6e542e2c365a86c421c20ef26fa SHA-1: 58c38beccbd2d9a516c0491b5344f29fbefe41a1 SHA-256: df58e4b4280b67e8943df7d44e65eddd9036778f901808396882eb7130a29ff6
94 Risk Score

Malware Insights

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

This PDF document contains a link to known malicious redirector infrastructure, identified as ggtraff.ru. The ML classifier also flagged this PDF with high confidence. The embedded link likely serves as a lure to redirect the user to a phishing page or to download a secondary payload. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of malicious links.

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/123?keyword=core+connections+integrated+3+answer+key+pdf
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5fa31b0a56db9.pdf
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/takedojomogubi_zigeripo_bomurolabo_fesekitonegu.pdf
    • https://cdn-cms.f-static.net/uploads/4392451/normal_5f972fe954b57.pdf
    • https://cdn-cms.f-static.net/uploads/4421056/normal_5f99e2613b243.pdf
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/deradekusige.pdf
    • https://lalonofinesuver.weebly.com/uploads/1/3/4/4/134442061/dac9ead06f6.pdf
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/jakejodezepulo.pdf
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f900e0ea308a.pdf
    • https://maguduvogusimog.weebly.com/uploads/1/3/4/5/134583052/kufugutedajoxelusu.pdf
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/tozebifojutejumikiba.pdf
    • https://cdn-cms.f-static.net/uploads/4386092/normal_5f99ca030650d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/50b8a86e-9f19-46b8-a3ba-b18515a1fff9/fury_by_laurann_dohner.pdf
    • https://uploads.strikinglycdn.com/files/1d7401ab-042c-40a2-b4b9-50da7865b7d5/english_as_a_second_language_books.pdf
    • https://uploads.strikinglycdn.com/files/15f01ca2-b97e-4740-9b3c-3e4c57bce724/30636938356.pdf
    • https://uploads.strikinglycdn.com/files/6ea22653-8c63-4a59-b017-3d0c4414c221/incisal_guide_table.pdf
    • https://uploads.strikinglycdn.com/files/4daf6f5e-8e30-47c6-bf45-3c482831598f/canadian_national_square_dance_convention_2020.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_off00005e41.bin
8db7402152e82eeefc0628d6066f8377039ef44689a7241f9d68ea373a52b3aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 5616 bytes
font_01_sfnt_off0000718a.bin
c06b80294d5f19b26489444ebdbea8ea19895105f40e010861f4406d09f09aad
pdf-font-stream PDF embedded font (sfnt) at offset 0x718A 10912 bytes