Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c4b2ef25b84809…

MALICIOUS

PDF

33.1 KB Created: 2020-10-05 17:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 02d0b6d6939b86cc8328f39a080e8dd0 SHA-1: b71694bc95b629a7cdc672cf49e21ee6b96f80bc SHA-256: 47c4b2ef25b8480990bf13b71280398058b159ddfd97084245c5a4a3c9f2136e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing a 'Bissell spotbot pet deluxe manual' and the malicious redirector URL, suggesting a lure to trick users into clicking. The ML classifier strongly supports the malicious nature of this PDF.

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 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://ttraff.link/pify?keyword=bissell+spotbot+pet+deluxe+manual In PDF document text
    • https://site-1037268.mozfiles.com/files/1037268/27753065570.pdfIn PDF document text
    • https://site-1036722.mozfiles.com/files/1036722/47086828849.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/7361052305.pdfIn PDF document text
    • https://site-1043519.mozfiles.com/files/1043519/fovoviger.pdfIn PDF document text
    • https://site-1042345.mozfiles.com/files/1042345/wofodegubinegas.pdfIn PDF document text
    • https://site-1044503.mozfiles.com/files/1044503/tizol.pdfIn PDF document text
    • https://site-1043800.mozfiles.com/files/1043800/fejifelekotazukega.pdfIn PDF document text
    • https://site-1036936.mozfiles.com/files/1036936/80864114557.pdfIn PDF document text
    • https://site-1043088.mozfiles.com/files/1043088/74322181299.pdfIn PDF document text
    • http://files.accessyourhearing.com/uploads/1/3/1/4/131453284/019fe03bfd.pdfIn PDF document text
    • http://files.kantkollections.com/uploads/1/3/0/7/130776649/wubewijaxufopul.pdfIn PDF document text
    • http://files.educationsymposium2019.com/uploads/1/3/0/7/130776783/xogigizifudodululiti.pdfIn PDF document text
    • https://site-1036735.mozfiles.com/files/1036735/90313256439.pdfIn PDF document text
    • https://site-1042106.mozfiles.com/files/1042106/46925804097.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/41592347659.pdfIn PDF document text
    • https://site-1038514.mozfiles.com/files/1038514/67425212115.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/82853863842.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000043a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A9 5268 bytes
SHA-256: cf9f7fe2c0b8b73d39d3fd45023bbbf63f647a1cc9fd77642e2070ed6365687c
font_01_sfnt_off00005579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5579 9512 bytes
SHA-256: 4e322654e28dc03f9b4512f2c9c0380782d298c3d92d5b595fb4827e686b9a22

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