Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0051ab42b189f43…

MALICIOUS

PDF

43.5 KB Created: 2020-10-28 21:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1138602bd4ef14c48d09cd4d46796755 SHA-1: d123584619ce29940acd7e0cc73851010d5d893c SHA-256: e0051ab42b189f433b2633fc27dbcda28c7f0a7e0a483c9039b9a8e9eb948e8f
134 Risk Score

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.
  • 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://ttraff.link/123?keyword=house+on+mango+street+vignette+themes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f8820800e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f87333f05a83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_5f9161c8d636b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5f8e89a68731c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_5f97c8fc744f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369653/normal_5f9731093c88f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5f8c7f536f0c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_5f92d8f73e3ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006dc0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006dc0.bin)
    • https://uploads.strikinglycdn.com/files/c3c7a50a-598a-4065-aa6b-32ade7bf6731/zuvuxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cdc1cbe-b216-42c6-98e6-07559da65c51/kefaret_trke_dublaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29869ea5-a3f9-4893-a02a-51b94630ed2c/you_should_be_a_witness_for_the_lord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8cbb525-5570-4714-8f3f-6935d3a487ca/zibakorivupivutuxawem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5c18a9-86f2-4eef-be4a-a960f03793d5/nutugazomizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caea57b9-df21-4c34-9315-a27abdf28216/serial_sony_vegas_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad714e03-c724-437f-b080-bd72a4d78f5f/niburuvorepagejegodejiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832a08a3-9684-42cf-a7b4-212c3d97a1cc/52321968720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44da37f8-d8e5-4a1b-8d35-6cf3e3347e09/nalazumox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b951e06d-ce6b-4699-afe7-d721322dfafe/kosekokaduv.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_off00006dc0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC0 5088 bytes
SHA-256: 226eabbf3979580b6a1d6c2e118290e93f329cfb55d5d000d8e71fbe7baf28a0
font_01_sfnt_off00007ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 10020 bytes
SHA-256: 3453039ae70903c49b2dc0a0b4db2919a13078358283cd1bc7c423daa1af4b47