Malicious PDF — malware analysis report

Static analysis result for SHA-256 002df1dad4f127a7…

MALICIOUS

PDF

73.0 KB Created: 2021-03-15 02:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4af9d73dfce342d7953a5be6feccd5f6 SHA-1: 5be8aa71d077de395e717789f8d45903fa03f944 SHA-256: 002df1dad4f127a7876c93a34526d4dc4d735fc84e33cef55fc4cd378219002d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and 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 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=simplifying+radical+expressions+worksheet+algebra+2+pdf PDF link annotation
    • http://bella24.xyz/how_much_are_vintage_matchbox_cars_worthmks07.pdfIn PDF document text
    • http://6gusevshop.website/what_movie_did_bruce_lees_son_die_inrkvj2.pdfIn PDF document text
    • http://gofadivus.mygamesonline.org/how_to_make_a_slave_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_5fd2192ccb667.pdfIn PDF document text
    • https://jojiwunu.weebly.com/uploads/1/3/5/3/135387754/liwikomupowude_dajakagis_xusabapuxo_nurek.pdfIn PDF document text
    • http://feelslike35.com/life_without_education_is_nothing_sangon1ihg.pdfIn PDF document text
    • http://morasuxod.getenjoyment.net/93851758173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_6013a2c362412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488103/normal_601d4c8fbf1a8.pdfIn PDF document text
    • https://tirugisig.weebly.com/uploads/1/3/0/7/130738706/dosoriluzimo_vomowisogewupu.pdfIn PDF document text
    • http://bubble1.space/jaxaridejufimubuxajpdalb.pdfIn PDF document text
    • http://kijekidajefi.getenjoyment.net/xokisesusavefito.pdfIn PDF document text
    • http://itasda.online/58859611960jk1t4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453103/normal_5fefb2d31be58.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/c23ca9b1-1abd-4473-a1c3-e75ddd37afef/ozymandias_poem_meaning_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2ccb5c9-3945-4070-949e-5f6a4ff5e31f/ripexuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903198aa-cf35-4a3a-b8ea-5e7600051c03/meade_etx-70at_accessories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0aae36-2e90-478f-ac7d-fd56301d922d/google_maps_api_key_free_limit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c44a11-f8f3-4c0a-bdeb-ad297fdf8878/govopovudog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf9d2fb-74ec-46c4-96a5-3cc9b38b64ad/sears_kenmore_sewing_machine_model_1120_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b293dd-db1b-4ef5-bc24-83dce281f664/what_is_models_of_change.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_off0000e005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE005 6268 bytes
SHA-256: b1e9c73bf477c58acef42b8c5779cddb60810b21783b942f2f4156351f4e156a
font_01_sfnt_off0000f54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 9740 bytes
SHA-256: c3469740ce28d994d98f04488797bd27715cf4846eca42d4d7c843fc11f58238

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