Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bf7d3af0a4aa06…

MALICIOUS

PDF

45.4 KB Created: 2020-10-16 13:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0193f91d7e209d7889a731d1da3232c0 SHA-1: 6672dd1a77a4cfa90f95780d2aa28defca51ac72 SHA-256: 56bf7d3af0a4aa063a2b909eb756f136bb65788a2e9b220cb96fef59ca67e439
184 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.
  • 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://gettraff.ru/pify?keyword=english+proverbs+with+urdu+meanings+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f870454197a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f8939667dc54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f88f73044726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f88896675935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8719c9f0e7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f880514ec031.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/tolatadubezi.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/5734794.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/regamafizesoxidiwed.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.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/b3030142-bcd8-4c8e-b133-b5b09fb4ddd9/35304798333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e01e84f-3fda-4cd5-9796-e9f2a0234151/wobirasafukak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbfc5628-feb1-4f59-9177-ad6c6889f69c/gidetexusanivow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/339f125a-3c17-4fda-a59c-6cd998d28483/ditokizoxisimasevuzif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ac3cef-858d-406e-9529-d8299c958be0/zozis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971e22fd-3336-4b82-968a-8aff77294d0a/gubojenijaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ade03901-f1e2-45bc-a6dc-7ab42d34253c/36450261916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf10f79-bee3-47df-a194-ad3b904b8078/44973893534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3778/6780/files/gnc_protein_powder_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2162/6276/files/81182604304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/20259585403.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_off00007294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 5704 bytes
SHA-256: adeda64092ff247cbbb09c00fbb3bb9999ffe2fb22ebfc275eebf179e660e1a2
font_01_sfnt_off000085e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 10004 bytes
SHA-256: 486d0c55ee82968c85de57f541b61628225a6eb06bcdd32f8c191ea381f2361f

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