Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a9b18bbbbf1ea7…

MALICIOUS

PDF

58.9 KB Created: 2020-10-02 17:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 624edf4cfacac280e7d614804ccf4462 SHA-1: 0809523a2c03d740c11ee9419a343fee536b2c93 SHA-256: d0a9b18bbbbf1ea7192ba1ba4032c1486031cac8b719073e86ec021e6d581a6c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to known malicious redirectors or link farms designed for SEO manipulation. The document body, though partially corrupted, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

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://cctraff.ru/strik?keyword=libros+de+auditoria+forense+pdf+gratis In PDF document text
    • http://ziguxu.reeldealdemos.com/uploads/1/3/0/7/130776433/newiretirane.pdfIn PDF document text
    • http://nobaraf.sassafrassugaringstudio.com/uploads/1/3/0/8/130814328/7f663a05a768a.pdfIn PDF document text
    • http://files.thehalloweenshopofbenton.com/uploads/1/3/2/6/132695813/4241775.pdfIn PDF document text
    • http://files.renmach.com/uploads/1/3/1/4/131408942/nupapozafewopet_kejegikepala.pdfIn PDF document text
    • http://files.create2day.org/uploads/1/3/0/7/130775263/polisofewelaw.pdfIn PDF document text
    • http://files.upcycledonline.com/uploads/1/3/1/4/131437123/6d1a859f24c1.pdfIn PDF document text
    • http://lixenu.dewintondesigns.com/uploads/1/3/0/8/130873922/vuzejasutinevagakez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3807/5799/files/72420939457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2507/3829/files/types_of_group_dynamics_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8689/7046/files/series_and_parallel_circuits_lab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2647/6956/files/dust_in_the_wind_bass_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3021/6345/files/duck_commander_boots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/sharp_lc-26sh12u_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/vabinikit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/6006174385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6994/7555/files/xamiwonuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/phoenix_bird_tattoo_for_ladies.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000971f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971F 5140 bytes
SHA-256: 51371f7eed6937dbeb5823af1cddab8856b31c3ec8c361bcd6706cc2f554ea2f
font_01_sfnt_off0000a89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA89B 11696 bytes
SHA-256: d0576fe05b58fc4051ea6600c41b35e936f79c58af1063f3b6377309c6f6a069
font_02_sfnt_off0000ce3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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