Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2359f01d57d703b…

MALICIOUS

PDF

48.5 KB Created: 2020-10-05 05:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 59db63c59a2bdcd9a96f6ad189c157e1 SHA-1: eb9a27cd71e3602051d84c45ee6a7188e2452d22 SHA-256: c2359f01d57d703bba755738a1ca1b8e7004d7491c2ae5180b11cc5be73bdde0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with the primary one leading to a redirector infrastructure known for distributing malware. The document body and heuristics indicate a lure for a 'save game' download, which is a common phishing tactic. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?keyword=save+game+hay+day+android In PDF document text
    • http://files.nighvision.net/uploads/1/3/1/4/131453990/4085270.pdfIn PDF document text
    • http://files.mrstuckeysclass.com/uploads/1/3/0/7/130776841/4143467.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008183.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008183.bin)
    • https://uploads.strikinglycdn.com/files/44efa687-7e77-4c45-82c9-060cfae6a04c/kokatokufikediworibofowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c200edd5-ae21-4e0f-b33e-4f5340cb2b0e/51479618856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2fe732-489b-4424-89a1-6319e4dad23f/wirarerukof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b532a0e5-033a-4880-8fca-596976bcd173/6584039081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea04b6b-14c9-47c8-83d7-aee640b87def/fajoxorofewefekudobawaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0cb8d68-a323-4762-9ed5-36cd7ac7a06f/87705733154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d17cf8-0b7a-4b3f-862a-9ddbc17bba81/kasulagemaninirimodow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a485a17-998b-48cb-860a-da82cc8900b2/pazusijisif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fece531-3fef-4b6f-accc-c197ff95acee/fotigozenujawemowafaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02ceec4-2d76-41ca-b95b-1c665beab3d0/20093038118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b06b07d-65fb-4b63-93f7-b191171beb2f/39366766113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66df5b11-1bd1-4ca3-8a98-f67401a1b0ca/rulogog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78787a15-9d99-4e9b-945d-8ee2d950a9ad/dekamuduzifawemixapusokon.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 extracted file (font_00_sfnt_off00008183.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8183 5296 bytes
SHA-256: 486d4a70426af3b5f16df16531bb62ea532fbb0f1a8367cb229399218233be0b
font_01_sfnt_off00009369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9369 9912 bytes
SHA-256: eaa698faa58ec89637419bdfb274cf7425c48ef8b65f03492b9bbfa2b903aa11

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