Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dcf2654d3897a60…

MALICIOUS

PDF

46.1 KB Created: 2020-10-10 02:04:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9f39982239546734e9225d458936971d SHA-1: d06d9d8d0fbbcf1065fc3cd207512ccaa2f2d196 SHA-256: 6dcf2654d3897a600cb518614652514ae7d575abe990dbada41d0500a1bdd9b2
194 Risk Score

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://cctraff.ru/strik?keyword=sport+comp+autometer+wiring+diagram In PDF document text
    • http://files.mrsdownsclass.com/uploads/1/3/0/7/130739740/2074920.pdfIn PDF document text
    • http://files.colfaxrock.com/uploads/1/3/0/9/130969391/kefadixabotivugofila.pdfIn PDF document text
    • http://files.bayareanaturalbirth.com/uploads/1/3/1/8/131856743/8245661.pdfIn PDF document text
    • http://lukukana.forwardoutdoor.com/uploads/1/3/1/8/131858661/5120079.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/922c8467-dc43-4e45-baaa-e994b726c8a3/11952839501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e13e506-1ea9-4179-bd40-2a45d1e4e08e/famefopef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74ccbaf-7a39-4ffc-98bb-390bccac5f81/14930690939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540b5169-f9c5-46e9-b213-39faccc825ba/vixoreguke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9db49b0-4db1-4671-b705-b4c31b841291/kuxox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0126b0b-8c7e-41ca-bd5a-afbf6891a57d/satimisexide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd751c6a-b4d3-43fb-84c3-66a85e6e9af4/wafumibefudesexinuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/073aff7b-4773-4a59-9d25-3307dd0c9891/rolisisisubeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c038bcc-4dbd-4b3a-8895-58418e3b1834/3141674650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d982aaa6-24c6-4dba-a8bf-1e28be9f8892/gazatuwevixaxotixuwax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/815317c3-56b8-4e8f-b8d5-84e899c9c751/xevamigope.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

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5260 bytes
SHA-256: 6d2cd11eee268764cbfe34c714fe3496029f71c6d5b18f51c54fd0e2df528daf
font_01_sfnt_off00007a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A79 10520 bytes
SHA-256: 1d4dedb1edd394f4a9ab818b39b6b4ac538331d11f04b3323e8054466ced538d
font_02_sfnt_off00009d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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