Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f1ee08d6b3c24e…

MALICIOUS

PDF

72.1 KB Created: 2021-03-07 09:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4a655abb3fa9d5eed72f6ea19aa013c2 SHA-1: 43f4212e8ad632f3c8f38a0c24d09681ed4a129a SHA-256: e5f1ee08d6b3c24e6c135698cc905417f64fe6888554cfa41aaba42225fb313d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/wix?keyword=iron+resurrection+home+page PDF link annotation
    • https://wutejaguruloz.weebly.com/uploads/1/3/1/8/131871665/324effae0e137.pdfIn PDF document text
    • https://tifogufa.weebly.com/uploads/1/3/1/6/131637606/d28392c482a.pdfIn PDF document text
    • https://zewijevatijafat.weebly.com/uploads/1/3/4/2/134265582/2103770.pdfIn PDF document text
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/tebowefu_tororevemutel_xobija.pdfIn PDF document text
    • http://ovca.space/certified_fraud_examiner_prep_course_freeno3zr.pdfIn PDF document text
    • http://teaitalis.space/basal_cell_carcinoma_nhslnlps.pdfIn PDF document text
    • http://dovulup.iblogger.org/98535142347.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/49e9c904-61fe-4139-8e62-a6cf1165ea99/23380932873.pdfIn PDF document text
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_60a6779f39f2484c9bc5a5386f669e2a.pdf?index=trueIn PDF document text
    • http://vekalaluno.epizy.com/original_receipts_for_expense_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afaaa65c-4f26-408c-b0ff-fcb2eef3ce3f/how_hard_is_it_to_learn_tattooing.pdfIn PDF document text
    • https://5e54d98c-4257-4cc7-9010-48f3df296eb2.filesusr.com/ugd/05240c_4e32816396e54e368943ae44ae527822.pdf?index=trueIn PDF document text
    • http://jikelofov.rf.gd/xanuzekijuxego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68335082-2d3b-49b3-bfe0-60c455b6206a/81112937713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11d8798-660d-46bb-ba4a-4f4a42531fd7/22040924774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c556ec-1fb7-4789-a40e-3b63645253f7/fikoduvemupapipe.pdfIn PDF document text
    • https://c3bb11cb-ba02-405d-8462-2b4421b436e1.filesusr.com/ugd/4c7814_d0bd734c962b48028d36cfa0a0e37b44.pdf?index=trueIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_8cfa03e63c6e49589cc13d3e45165d17.pdf?index=trueIn PDF document text
    • http://xenavak.rf.gd/cabelas_pellet_grill_recipes.pdfIn PDF document text
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_483a1a0b4f774b7a9b2f0dec051d8f2a.pdf?index=trueIn PDF document text
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_2ec80d07fdf64a87957c301063fc1e1f.pdf?index=trueIn 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_off0000dd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7F 5252 bytes
SHA-256: 449079982dc9f262c19056f2c6e41a112cd237487b8037f066cd811d3874cc23
font_01_sfnt_off0000ef35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF35 10400 bytes
SHA-256: 2ec44ff70e96008f81ccfe74e8d8e27f397f426b60a9d999ec634e9081dd4bba

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