Malicious PDF — malware analysis report

Static analysis result for SHA-256 3756f7c5245d016a…

MALICIOUS

PDF

47.3 KB Created: 2020-10-02 11:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bb38040c234e487501d4ffcb5009de83 SHA-1: 61617b435034e0d6ea9c432284a95f7a4eeef5ea SHA-256: 3756f7c5245d016ab4675eb0d6b7d27e0ac71231cd382b5c2decb3b2c6fcc9fd
184 Risk Score

Malware Insights

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

The PDF document contains embedded links that point to known malicious redirector infrastructure, specifically designed to lure users with search-term-like URLs. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector. This suggests the primary goal is to drive traffic to malicious sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=ghost+rider+movie+in+hindi+hd+download In PDF document text
    • https://site-1036626.mozfiles.com/files/1036626/97585338135.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/famozimeponunixikivet.pdfIn PDF document text
    • https://site-1036945.mozfiles.com/files/1036945/56310509327.pdfIn PDF document text
    • https://site-1040341.mozfiles.com/files/1040341/90390951911.pdfIn PDF document text
    • http://doxafex.stjohn-bc.net/uploads/1/3/1/6/131606938/8348030.pdfIn PDF document text
    • http://files.makeupandtanningbycassie.com/uploads/1/3/0/9/130969370/8ce16ee60.pdfIn PDF document text
    • http://files.inspirednourishment.ca/uploads/1/3/1/8/131856949/pulevibegokeka_dabajazonute_fiwuzif_lizunanexaxusip.pdfIn PDF document text
    • http://mozusipu.hansmerklein.com/uploads/1/3/2/6/132681513/25334b7f7ad121.pdfIn PDF document text
    • http://files.davistennisacademy.com/uploads/1/3/0/9/130969002/wetumuxonif.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://uploads.strikinglycdn.com/files/2da274e6-8736-442c-9f03-43ab816418ff/93611967411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d588044b-ea72-461a-9e0e-b47679b313c2/21137090047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203fb021-f466-4dcd-9c10-8e54590810f0/9651964551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23430390-5bc3-4890-a36c-bf24e1bbcedb/zotowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee736769-5d79-477e-bfa8-661637d55c7d/5254381115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112094cb-03d6-4b69-9da2-9ddba5cb23b9/koniremumija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4adea3b2-e42f-490e-adec-8ae1791cb1cb/giwevovodisolapuditimegav.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_off000069b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B9 5036 bytes
SHA-256: 03a0b68cd08d6508570d83a2773502b3612eb8c3964c1a28a359ad2b7a016435
font_01_sfnt_off00007ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC2 11708 bytes
SHA-256: 3a8e6e09afd96e3a13794942fc0994fd87e531a83bdde5e9f06d461ed5a47785
font_02_sfnt_off0000a193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA193 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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