Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adeebdc7b27f3cc…

MALICIOUS

PDF

73.2 KB Created: 2020-11-09 01:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 699a2deebe610f90643116eb8e1d08e0 SHA-1: da2f045055e6020c1f683caa6ade12b2ae30dc12 SHA-256: 8adeebdc7b27f3ccf046745d28f975017f428547ff09cfff6da7905a6e52421f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/123?keyword=zoo+tycoon+2+abc PDF link annotation
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/6090978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f91acb1cb79e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5f9268905d008.pdfIn PDF document text
    • https://tefimapotile.weebly.com/uploads/1/3/4/3/134351392/7741604.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/bepabexobu_xodoxavu_lenusigobu_xadutedid.pdfIn PDF document text
    • https://jafadunew.weebly.com/uploads/1/3/4/6/134632108/8384506.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.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://dojofenuf.files.wordpress.com/2020/11/xixeludeposixalitikada.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/realm_grinder_excavation_before_reincarnation.pdfIn PDF document text
    • https://nusonawe.files.wordpress.com/2020/11/ruxinarularolupadofawi.pdfIn PDF document text
    • https://buverawuluf.files.wordpress.com/2020/11/exercicios_sobre_estrelas_constela.pdfIn PDF document text
    • https://natawola.files.wordpress.com/2020/11/59943104730.pdfIn PDF document text
    • https://vurabizi.files.wordpress.com/2020/11/67761018966.pdfIn PDF document text
    • https://sazaxasegu.files.wordpress.com/2020/11/26344682303.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/of_mice_and_men_what_is_candy_s_dream.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA32 3172 bytes
SHA-256: b72434dd55850d1a0cbd2de71b2d2a4cde7cd730e04a787619a948f64c16c161
font_01_sfnt_off0000d598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD598 4440 bytes
SHA-256: 342dda2bce6fd774ca9960287ba23055d329a3b2d5f8a729c98166f9fb96a1c5
font_02_sfnt_off0000e4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B8 10800 bytes
SHA-256: 8bee029b192cfc776f53fc0134533fe346704035e80e6d609fda3985f80cec3a
font_03_sfnt_off0001098a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.