Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11701a79aa9f8af…

MALICIOUS

PDF

70.3 KB Created: 2020-11-08 07:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: b0c6eee0df666b8820fc73bf9db07852 SHA-1: f608a02a2f998e26e6d61be6961abbd93a7d17f5 SHA-256: e11701a79aa9f8affa46367ce668fd0b746e3d4e61951c1da4ffc1590023d584
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=balloon+tower+5+defense PDF link annotation
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/saloviganepepi.pdfIn PDF document text
    • https://linugotozoluj.weebly.com/uploads/1/3/4/6/134662393/gekenonomejezudofixi.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/kiwevovubot-riwekej-romuzaloz.pdfIn PDF document text
    • https://moxipilewuzeget.weebly.com/uploads/1/3/4/3/134360433/21c3be99bd0b.pdfIn PDF document text
    • https://nukafezika.weebly.com/uploads/1/3/4/5/134510633/zevosawixuwoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451932/normal_5fa2280b6a368.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/e52f3d36-314a-48d7-b7e1-5aa24b2fa468/wuworobipigafinebej.pdfIn PDF document text
    • https://rijaboxato.files.wordpress.com/2020/11/best_ap_statistics_study_guide.pdfIn PDF document text
    • https://lonofoxov.files.wordpress.com/2020/11/19943643404.pdfIn PDF document text
    • https://berifafu.files.wordpress.com/2020/11/exogenous_and_endogenous_geological_processes.pdfIn PDF document text
    • https://kakutojuzi.files.wordpress.com/2020/11/fevakosine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df2ef12c-eac9-4f97-8141-b2598c5b3f12/87732761328.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_off0000c6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B9 4904 bytes
SHA-256: 325530d7c677489144d46d18a5abd3ed65843d5675557ac50b00060996e6e159
font_01_sfnt_off0000d786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD786 11332 bytes
SHA-256: 24560a473f2b46a6a6f7b37723105a3ec8c456be08cbae8ce48a4c2caf2ce296
font_02_sfnt_off0000fe1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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