Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb043af0439d942…

MALICIOUS

PDF

42.8 KB Created: 2020-09-17 08:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5106a94984223ccf95b476df8aa552d5 SHA-1: bc2691e0baac23a782483770378f1e7d3a88e00f SHA-256: 5fb043af0439d94217efccbd5d28cd2468de622e1128499847b6a26a7d7dac64
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common tactic for phishing or SEO spam. One of these links, 'https://ttraff.club/wix?keyword=brett+keane+youtube+channel', is identified as a malicious redirector. The presence of numerous PDF links suggests an attempt to create a link farm or distribute malicious content. No scripts were extracted, but the overall structure and link analysis point to a malicious intent to redirect users to harmful sites.

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.club/wix?keyword=brett+keane+youtube+channel
    • http://wabefe.nnft.ca/uploads/1/3/1/6/131606666/5119180.pdf
    • http://files.hacobian.org/uploads/1/3/0/7/130776072/zuvuzuwud_bevomuruxelifa.pdf
    • http://memose.nuodphi.com/uploads/1/3/1/4/131453194/c5bc0ff3115e.pdf
    • http://files.cleveland-park.com/uploads/1/3/1/6/131607075/52bd3246.pdf
    • http://files.improvplayground.com/uploads/1/3/0/9/130969452/fisoroxokezifokebav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://24b141aa-eafd-44a8-a0a4-4e9e40380af5.filesusr.com/ugd/3254bf_a58f391ee67b47c091c4b424091c168b.pdf?index=true
    • https://6af5873a-4311-48c3-9a00-73339e7fbd22.filesusr.com/ugd/6116da_b24b69305e92428496893607f131aff6.pdf?index=true
    • https://dc45ff03-247b-4256-be5a-b9e20d84ac3c.filesusr.com/ugd/cc15ef_62046bd9da514060840ff1677e9116e6.pdf?index=true
    • https://628c244f-43bb-4231-b4f4-507ee685b6f7.filesusr.com/ugd/c63dba_e46f938707624d618da65ffcb68e46a3.pdf?index=true
    • https://3d9f1282-5095-4667-a243-0dff7c462ded.filesusr.com/ugd/4aae87_bbfd4b5b987249508f8b58aa2b66db3b.pdf?index=true
    • https://df76f0d7-f0a9-42dd-95ad-2142a576fdff.filesusr.com/ugd/80fd5d_7b444cc318e6433cb6eac60be596fd18.pdf?index=true
    • https://2f501b19-c78b-4fc1-8591-cc18b1b45c16.filesusr.com/ugd/fe83c3_5990d0e8935a4dc0aa554224d45e4fa1.pdf?index=true
    • https://654c680d-7028-4ef6-b939-33a0fd111886.filesusr.com/ugd/b58d21_66776b48b67f4720a26606bc7c732502.pdf?index=true
    • https://ec45b37c-0763-4840-9fb4-d3cea18122eb.filesusr.com/ugd/efc97f_2f94482fc91e4d578d0f792c7fdb96a4.pdf?index=true
    • https://45b6ab60-e926-41e7-b561-cb40703eb509.filesusr.com/ugd/7a359d_929d266e8cf749f7871c11045e86a87a.pdf?index=true
    • https://ac65dee9-f853-46af-8002-79b95fbdf0ae.filesusr.com/ugd/4c7633_d1571aec40c8493684b734df6399e6ea.pdf?index=true
    • https://483b2783-0303-4fc0-8b89-3a70a5ff41e9.filesusr.com/ugd/f1780b_fe01a5ebee344fb584cc87ca3b6ab59a.pdf?index=true
    • https://30ecaaeb-04b1-4acb-bfaf-f6c93b6257c8.filesusr.com/ugd/06497e_9cb720640f2644bcbba83f6b25d4562d.pdf?index=true
    • 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_off00006a68.bin
43f1535209258f569f93cf4cb5ac60aa55dad0e25b43e6109a4c4da054128ac7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 5064 bytes
font_01_sfnt_off00007bab.bin
50c25ad19b0fcd79c8475e37fefa1715b506b4ec02fde0345d149bcb203973bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 10160 bytes

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