Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aeea551573104c7…

MALICIOUS

PDF

55.6 KB Created: 2020-10-05 09:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9f11a8d1cab02b8558cbc0b1956f03a6 SHA-1: f28c503f1eb9d69ae9587e8c950439ae50cfdf97 SHA-256: 6aeea551573104c7628e9670f95aee3a018e96318c32e864a625e8743bbc6370
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=coinops+8+massive In PDF document text
    • http://sikup.sandavillas.com/uploads/1/3/1/4/131482962/vedawapuram-bujogaxi-risigudamewupo-nikopav.pdfIn PDF document text
    • http://files.splashpaintingandwine.com/uploads/1/3/0/8/130813550/xazogosok.pdfIn PDF document text
    • http://files.redhotflames.net/uploads/1/3/0/7/130776874/85dbe404c642e.pdfIn PDF document text
    • http://files.hambridgepreschool.co.uk/uploads/1/3/0/9/130969717/1583356.pdfIn PDF document text
    • https://site-1039207.mozfiles.com/files/1039207/65557334777.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/sunivalitoviv.pdfIn PDF document text
    • https://site-1037911.mozfiles.com/files/1037911/84854374245.pdfIn PDF document text
    • https://site-1038851.mozfiles.com/files/1038851/zidunuduwelebasapedor.pdfIn PDF document text
    • https://site-1041857.mozfiles.com/files/1041857/10724993189.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/6fbe71aa-6f53-438c-ad4a-743834ef2d5e/gododejujabasetepekokis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebb5ddd-bae8-4751-8692-34e6de8fd121/61823515281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b71f4f-1791-47b3-8de0-dc2d7529240b/31237813552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af163b6-2386-49eb-88db-65dd7bf7512e/minujekanitike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6bdce5-60d8-402e-9bb6-32442b82eca1/40374272710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/febc468c-ce31-402c-a893-fa54c4131029/306479890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e568aad0-4252-4cef-8204-33719ea517ad/81909664331.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_off00009c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3B 4996 bytes
SHA-256: 70872d62dd2d984eca827a2983dbdd6ff79d0a03bbd68e13f265012d91957317
font_01_sfnt_off0000ad2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2A 10680 bytes
SHA-256: bd2f5bd42f352a8299e6d25640c692189ce10ecb7b135c4f84facf917cb046a9

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