Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8d0590aad93ab0…

MALICIOUS

PDF

48.2 KB Created: 2020-10-06 16:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5a2a872b9602928db11b69557d6946b1 SHA-1: f29d3fb9d2ee1fa0d447d343fa3aa1c69d9cdc3f SHA-256: 1a8d0590aad93ab02b8d48009bda64a76318eb970291f672c2b74f4b6d6d8549
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links. This suggests the primary purpose is to direct users to potentially harmful websites, likely for phishing or malware delivery.

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=cours+des+transmission+par+chaine+pd In PDF document text
    • http://tavutugiv.alphawomenscentermn.com/uploads/1/3/1/4/131437130/kedixup-velako.pdfIn PDF document text
    • http://files.acbasoccer.com/uploads/1/3/1/3/131380482/bosupovar_doxazogosi.pdfIn PDF document text
    • http://rupina.agnespoirier.org/uploads/1/3/0/7/130775164/mopujojiwomerujuke.pdfIn PDF document text
    • https://site-1044416.mozfiles.com/files/1044416/soxujewisiwawuguve.pdfIn PDF document text
    • https://site-1037283.mozfiles.com/files/1037283/mejukut.pdfIn PDF document text
    • https://site-1040780.mozfiles.com/files/1040780/nazujed.pdfIn PDF document text
    • https://site-1036728.mozfiles.com/files/1036728/ruxixidevokiwa.pdfIn PDF document text
    • https://site-1036728.mozfiles.com/files/1036728/5806198295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/wow_warlock_pet_names_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6332/files/46681745423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1584/8103/files/terifamepezosoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0958/0967/files/dutch_hollow_lake_directions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4827/4582/files/68959553253.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 5184 bytes
SHA-256: 792abf21b9c00f862493a59c7a41a691fce647ce84a652c17caeb60aa1638897
font_01_sfnt_off00008bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCA 12056 bytes
SHA-256: 6ee40d198b7f8596037a3bbc1d0b0f6c42f3ba73e4a84b6d312854399739fe78

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