Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0660bbcf9aef83…

MALICIOUS

PDF

53.9 KB Created: 2020-10-22 13:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 27553c61bb8fa586ae93c820960d0257 SHA-1: 61ca5b2633bfc568a5137702844b53b232e0fb06 SHA-256: be0660bbcf9aef83fe79276b112f2d4870543471ec80589c13c637b5a0fa5660
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://ggtraff.ru/aws?keyword=basic+computer+pdf+book+download In PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/4887678.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/tisonanoxurewubanupi.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/tefamejuvimu.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/7481120.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/4875903.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/1e740855884.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/c56c8fa4a9d62.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/podamavivarer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/55c394f0-fe1e-410f-802f-a5ed8c7953ff/21386387819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e598d9c1-43fe-4b4e-8e3d-7347eeccc7dc/6185632813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f86c07b9-b7b8-4e45-924f-06f0ec1583f8/lakenudagosijoxonagexif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e8c1687-702e-4eda-a95b-f23fda7b47d4/rezel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f143b117-5eab-47db-9b0c-3245fdab876c/21594065058.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/66950155220.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kafuzopepaminibeputex.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/xumironevugozupenor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d9c7f70-d469-4d26-a1ea-cb108af8643e/suzerejinokenonoruka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f08d135f-1c50-4259-885f-bdb20e54dbf3/children_who_chase_lost_voices_english_dub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16538d70-469e-487b-bdad-3b545406eafa/mejuwibuteromumitex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000861e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861E 5528 bytes
SHA-256: 16770f0caa5b95dcac0845aa6534f366d781f94d904b3501b86ef630abe4f550
font_01_sfnt_off000098d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D0 10248 bytes
SHA-256: 6d304da762fe523b0e5b520d376f0ff3d4eb4e2c80c235a4e8d29ea9d3edd014
font_02_sfnt_off0000bbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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