Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05443503f684de5…

MALICIOUS

PDF

49.7 KB Created: 2020-10-19 13:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 14eb70f967543716740e646cecbff43c SHA-1: f33ac5f8f9656191b360f5efeb1f9be988e914e4 SHA-256: b05443503f684de5f54824911695ffd350a489e3a81e13c3d2dc4a5b5755e245
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://cctraff.ru/strik?keyword=how+does+link+summoning+work In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/4604309.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/13fc2c8b.pdfIn PDF document text
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/6940685.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/5652282.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/500b6.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/kigulisilo_lisovenigalo_tezegikig_xavimi.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/zezave-rotakesegimuve-pogerasibuxej-poxolelafam.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/9864361.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/3f8ef8ba19db5.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/lafimobuzilupilom.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/wotusotosig.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/8e5422af-85f9-4513-bb19-ca8b5d1261ad/tatugixabanasirotexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfcd18f0-238d-4517-9e49-e59323df64d5/54020857771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2a89dc6-22f2-4369-990b-cb13a1079259/pawozesobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c4e41d5-c71e-43e1-9b51-b119fe97138d/dekovumake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/essay_writing_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5341/9173/files/wikogokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3675/2037/files/xuziluvugesolovadut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/rupert_neve_rndi_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/cooking_with_dog_hamburg_steak.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_off00007175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 4856 bytes
SHA-256: 3669a036d62300133435f9afa19fc3110042701efe31d9e98202e11cea9f2cf2
font_01_sfnt_off000081dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DD 12940 bytes
SHA-256: 5652104862a75319bc279d2d1018e256fcaa5d7fdaff64e528b115b72d946041
font_02_sfnt_off0000aabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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