Malicious PDF — malware analysis report

Static analysis result for SHA-256 7606b6b36e0a8edb…

MALICIOUS

PDF

45.1 KB Created: 2020-11-03 13:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318ec70448e7eac332ac269055a49136 SHA-1: 1e14f31c672e2eb89128ed75036e434329c7f1a7 SHA-256: 7606b6b36e0a8edb1c102486f35878c923ee3e208293f384d75eaffdbd76dc60
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm. One of the primary links directs to a known malicious redirector, suggesting a malicious intent to lead users to harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/123?keyword=eso+the+anger+of+a+king+complete+the+trials
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdf
    • https://cdn-cms.f-static.net/uploads/4447888/normal_5f9fc23f2dde7.pdf
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f90b8be7082b.pdf
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/2250669.pdf
    • https://gutomaxitokivi.weebly.com/uploads/1/3/1/3/131383747/3480633.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/e9690037-ae1f-4e0a-a74c-cb7626332b75/witimatebinaxutit.pdf
    • https://uploads.strikinglycdn.com/files/b5a72341-dec1-4aa8-84ef-a84450c9b5fd/lafew.pdf
    • https://uploads.strikinglycdn.com/files/9e791c04-c124-4471-bff0-524ec7e994c4/lukas_graham_7_years_old_song_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/799e153a-5665-49f7-8add-36035d99a2e8/dowejajixeturisez.pdf
    • https://uploads.strikinglycdn.com/files/04ff48dc-152c-4d3e-9fa7-613adeb92d95/shayna_punim_meaning.pdf
    • https://uploads.strikinglycdn.com/files/000a79f7-6b63-49b3-b63d-3615973eeee1/descargar_pokemon_oro_para_my_old_bo.pdf
    • https://uploads.strikinglycdn.com/files/9fb34b29-a2ce-40e4-a208-c15ef5a36087/13609058046.pdf
    • https://uploads.strikinglycdn.com/files/6e6d837b-2572-4585-a1c3-3d02ca05cbf1/c_programming_language_2nd_edition_u.pdf
    • https://s3.amazonaws.com/memul/coreldraw_to_online_free.pdf
    • https://s3.amazonaws.com/tuxutedi/pedetozumabisuxisojate.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_off00006346.bin
90f25a5970686a9d09d4d64a8b0735160c94691eed59b8ddb989159df016281e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 5236 bytes
font_01_sfnt_off000074e5.bin
88c072b3c6faf64e840409578b80471875b7f302fd65fb40c81ce86dd6dd8a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E5 10652 bytes
font_02_sfnt_off00009931.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9931 4324 bytes

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