Malicious PDF — malware analysis report

Static analysis result for SHA-256 61754821d7192fcb…

MALICIOUS

PDF

46.4 KB Created: 2020-11-05 16:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ca8db972d911c086d039ee09f90f91db SHA-1: 7c65bb4cab768b9700dcc25ad6560591b0ca5cff SHA-256: 61754821d7192fcb08d7c7c0800699b9358c6bfef11b6ef860d8283e6a626dc6
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://traffine.ru/123?keyword=sports+authority+coupon+online In PDF document text
    • https://luzodogapop.weebly.com/uploads/1/3/4/2/134265842/vufadigof_fatubegowitutix.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/1edc4e0.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/5653998.pdfIn PDF document text
    • https://worofinuwur.weebly.com/uploads/1/3/4/5/134582463/majarifideramame.pdfIn PDF document text
    • https://jujodupif.weebly.com/uploads/1/3/2/3/132303189/4364383.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/5792387.pdfIn PDF document text
    • https://fofonameg.weebly.com/uploads/1/3/4/5/134522304/3342865.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/digetamoravodevexaxa.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/6624546.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/58d05bec4.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/5202260.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://s3.amazonaws.com/xapidajovaji/nupanefetepokasejox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d714904-ee2e-4259-9ce5-784380ee37aa/vusividuxatovo.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/liquid_measurement_worksheets_for_2nd_grade.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_off000069ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69ED 5108 bytes
SHA-256: e4e0eb4aa0bc58ae022e8ae395cd19d3d0d02c16e8372f7725b5fec08e839579
font_01_sfnt_off00007b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3F 10364 bytes
SHA-256: 3b9af3978a215b711cbf4fb156699cc75335316a4dff7153de7e42e0edd740a5
font_02_sfnt_off00009e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e