Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fa0a8f56f1d666…

MALICIOUS

PDF

51.8 KB Created: 2020-10-26 19:58:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c01068eebcc746933086d0e0eb74a9fe SHA-1: d71c96c670fc4a3dd96bd0757016110f24b9e768 SHA-256: 76fa0a8f56f1d666afaeff49dfe1bd415ee13f8d8dcb19cc82b5a6dfd332f91b
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.me/123?keyword=michael+jackson+the+experience+xbox+360 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5f8743baab6fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408464/normal_5f96279ceaeb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f8a297ef0465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f8a95d27060e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5f945f2e345db.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007bc7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007bc7.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000b39f.bin)
    • https://s3.amazonaws.com/zuxadol/17829429826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/316440b2-3391-4385-a7d2-bc42256cf1bf/neluloxodilasobop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb72bff-3f03-4017-bb6b-d759ccf50abf/kurujixutaramute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac95249a-30c9-49bd-a7d3-bf0a54109296/petivuxurupimosulofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/901864b2-85b3-46cb-81c9-6c76f1d82b94/86530375602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a24a8a-8711-46e0-b4fe-b44e3dcf0dbf/nitodozarabutunipikodap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde6f41f-56fe-40ba-acb2-27ee569b1138/kodajajowadede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1a5e544-975e-48da-ba01-a8c2b0f4d4f1/97149542183.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/bourse_maroc_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/58984463837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccd4b39d-df5b-4c49-99de-a4ac68bc662d/kilerebudofotiraladadajuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c55c4f1-5d11-4716-a2fe-dce5a474084b/45609656771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcab271e-010f-41d1-81f0-c4a285e33ec9/79806069967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c63ed7ac-e197-40b5-82ef-323d2983764f/44453566197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ca0a32-6a6d-47b8-9a86-6dec50462754/duxaniwoxuw.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_off00007bc7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC7 5624 bytes
SHA-256: b44903dab1835516f69dc843ca585629b0ff1cfd3ff5db14816fb412c3209020
font_01_sfnt_off00008ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC3 10896 bytes
SHA-256: f37e34b1be4f3c761db6f88d68f7bbba009cc861c7bb5318dd7c2af060f3b97f
font_02_sfnt_off0000b39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB39F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176