Malicious PDF — malware analysis report

Static analysis result for SHA-256 214665653c848ebf…

MALICIOUS

PDF

79.2 KB Created: 2020-12-25 10:26:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 80103bc1336ef373c3bd089d61c7f752 SHA-1: d8daca6f383468caf738519273141260ed12de64 SHA-256: 214665653c848ebf32895c24c278f4e45aa08ca9f7aea800b64b8bc0d9f088e3
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains strings that may relate to the lure, and the presence of embedded URLs suggests an attempt to lead the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=mage+decurse+classic+wow In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410030/normal_5fb4002c78072.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/Nbsjfij/viruses_are_alive_because.pdfIn PDF document text
    • https://wavenugila.weebly.com/uploads/1/3/4/8/134852162/sekiketusa_foxig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366645/normal_5fe5913188b54.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/0gis7wH/pobobetonejudasi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367300/normal_5fcea76f80382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5fbb1eafd86c2.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/1039323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f86f8e569c32.pdfIn PDF document text
    • https://xekuvezenigut.weebly.com/uploads/1/3/5/3/135346982/8683c4.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/20154f66-df29-428b-a6fa-54a0a40239cb/plasti_dip_gallon_white.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/840c82b6-0f55-48b6-aaf2-2b125b556432/rupabarefodepon.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/29389513140.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_off0000ed23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED23 5204 bytes
SHA-256: 2f7d3705ae88c6707eed8d7a5b40dc1969a2e48ed15d42b889a2b6fc3af3ef76
font_01_sfnt_off0000ff01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 14740 bytes
SHA-256: 5dced8cfde6ea3721bfca37b5fe6b86be64bda4c66b8d57f521d940eb2bd7add

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