Malicious PDF — malware analysis report

Static analysis result for SHA-256 67207b4d0d5eb74c…

MALICIOUS

PDF

42.9 KB Created: 2020-10-25 16:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 130137621ce045b0cf7dc030d1a0c7a4 SHA-1: 029f6ade81b4cd55cbc264b0e72e9b709db95a0c SHA-256: 67207b4d0d5eb74c46a3eabfd97d18d2b8b167613d0e0df014437755ab71ba39
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://ttraff.me/123?keyword=ultimate+guitar+chords+apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f8e405963f86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f8c358e697b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5f8e5e9e778cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5f8f836ecad4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f86fb9a1c656.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/e601269da4579e.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/9500420.pdfIn PDF document text
    • https://sumijiluwovoj.weebly.com/uploads/1/3/4/2/134266387/pavasu.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/9383504.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/1364558.pdfIn PDF document text
    • https://tujebikofo.weebly.com/uploads/1/3/4/3/134359874/ca0bfa.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/6977123.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/jozepap.pdfIn PDF document text
    • https://nurekagenarufab.weebly.com/uploads/1/3/1/6/131636906/zenunazobi.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/xevenezegoja.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/kepibuvuvewa.pdfIn PDF document text
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/xurisinumoli.pdfIn PDF document text
    • https://wugusuza.weebly.com/uploads/1/3/4/1/134131733/75d5ff0706.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/8add140d6.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/3229124.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f909b5f32104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f8a13948ac1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f894b131595d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000063da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DA 5540 bytes
SHA-256: 2863624903a5fd0db949dd64a77bacd35a7cd3a345c705a46f7afb71e35ede34
font_01_sfnt_off00007684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 13592 bytes
SHA-256: 7e85824dd787d37fc9dcc587a714e703f5020b400acdf5d6dc5042bc17af9951

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