Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b65b1f6ed87b6b…

MALICIOUS

PDF

41.1 KB Created: 2020-09-30 08:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 20f03a7df444f42aef9deba33c90ac32 SHA-1: a891eaa22ed058b89c05ce018ea0a5a4fe9befbf SHA-256: 29b65b1f6ed87b6b1f14d400d9c5ce187642c410a02299afa0b0e38212bcb343
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URLs suggest a link farm or phishing attempt, likely distributed as a spearphishing attachment.

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=apprendre+le+fran%25C3%25A7ais+en+s%2527+amusant+pdf In PDF document text
    • http://files.bbsimon.com/uploads/1/3/2/6/132682570/tudijimavu.pdfIn PDF document text
    • http://files.sollysummersoccercamp.com/uploads/1/3/0/7/130739616/2273242e0f28fe.pdfIn PDF document text
    • http://files.talariusgaming.com/uploads/1/3/1/6/131606480/tukexekigimebop.pdfIn PDF document text
    • http://files.cienaraenelson.com/uploads/1/3/0/7/130775001/resavizokigi.pdfIn PDF document text
    • http://files.musicatmainstreet.com/uploads/1/3/0/7/130739839/davetuxu.pdfIn PDF document text
    • http://files.farmacybotanical.com/uploads/1/3/2/3/132302973/xutitogesafa-lixoreriberexik-larowuwonubola.pdfIn PDF document text
    • http://gikul.sherimacardy.com/uploads/1/3/1/6/131606260/jomulenop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/169f3a23-cb3d-40ae-bf46-c4b4f94f11c0/44916989552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/vevapudezuwifuxavam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6080/4249/files/napabosaxumofef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3517/1736/files/kannada_film_audio_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/kejemupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2421/files/79638403063.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_off00005af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF5 5392 bytes
SHA-256: 3de224bcd67f4bfdaef92def15123c21edd06acc806848681a0f76688c3b95bc
font_01_sfnt_off00006d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D41 13320 bytes
SHA-256: e5824df343366ce79ad21765af42cd02f691ef9e0902cdae0c2413ed2c2e1bb5

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