Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa7d1ff5d7f3204…

MALICIOUS

PDF

39.9 KB Created: 2020-09-30 02:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c9163916a280e96d70f3d2f72e4c1788 SHA-1: 60da410b7b142800772c55029939b8cddc744307 SHA-256: 9fa7d1ff5d7f32046a884129a9fe8b6e156978656aa575000c87c38ab97b4bcb
124 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.
  • 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/strik?keyword=catholic+bible+timeline+chart+pdf In PDF document text
    • https://site-1036909.mozfiles.com/files/1036909/27238803975.pdfIn PDF document text
    • https://site-1036636.mozfiles.com/files/1036636/noxilomelipexomazuta.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/nobadoruje.pdfIn PDF document text
    • https://site-1037048.mozfiles.com/files/1037048/koserid.pdfIn PDF document text
    • https://site-1036689.mozfiles.com/files/1036689/94324148253.pdfIn PDF document text
    • http://ripitomib.photographybysamantha.com/uploads/1/3/1/4/131437425/e54ae5ae89.pdfIn PDF document text
    • http://rarujinaf.objectpages.com/uploads/1/3/1/4/131453872/jogadug_falerun_visimuleve_fibawesazu.pdfIn PDF document text
    • http://files.thenutritionsupps.com/uploads/1/3/1/3/131398091/rosamuwisafirazo.pdfIn PDF document text
    • http://vituzut.relst-uhag66.com/uploads/1/3/2/3/132302780/vunizobewalenex.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/ee75f3bb-b083-479b-8cb3-ca79231550bd/53649378499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88cb008-ed35-47bb-b5b6-f91be9f9d9c8/75333377864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f222804d-648f-4da2-a6f0-80100a0b3221/31278881939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86d216f9-814c-4f55-8b3a-edbb689a1454/7842108076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8817e9f5-46ee-476f-8171-851b29f5a3d5/zarulanazofidadijovogin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc279844-7a45-4288-834e-aa482f557c69/10428494172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd410221-1754-4a09-a00b-1cf1a542930c/kavobosijajanipetog.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_off00005fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB0 5260 bytes
SHA-256: 9dd2e61cf05955ef272b07b2820ffb062269c3585fff00bcaaa8d1a788a83b70
font_01_sfnt_off0000715e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715E 9868 bytes
SHA-256: e220bc68b0a0c9326548dc3191692c0e3865d8968dadc4526c123b4a356dd3c5

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