Malicious PDF — malware analysis report

Static analysis result for SHA-256 eefc252b372ac3be…

MALICIOUS

PDF

38.9 KB Created: 2020-10-08 19:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d20b40877eb8402757c4e2aa3830ab8a SHA-1: e82c98f9a9dd8a815593eb2460997dcaf974f0fc SHA-256: eefc252b372ac3be58a7f66b71a475ab0b3cd9a7fdd8f133e07ca8b379ef0033
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=airport+sinema+bilet+fiyatlar%25C4%25B1 In PDF document text
    • http://files.johncarril.com/uploads/1/3/0/8/130873946/032ab982351bd5.pdfIn PDF document text
    • http://xoreni.cheyennebrubacherphotography.com/uploads/1/3/1/3/131379256/zamugab_gigadu_nagirode.pdfIn PDF document text
    • http://fomidop.seattleanesthesia.net/uploads/1/3/1/8/131871609/7436e0a4e3.pdfIn PDF document text
    • http://files.kimberlysfarmflowers.com/uploads/1/3/0/9/130969703/4027302.pdfIn PDF document text
    • https://site-1042101.mozfiles.com/files/1042101/totedo.pdfIn PDF document text
    • https://site-1040056.mozfiles.com/files/1040056/furisojinevarotelafodafor.pdfIn PDF document text
    • https://site-1043176.mozfiles.com/files/1043176/41743975054.pdfIn PDF document text
    • https://site-1039698.mozfiles.com/files/1039698/nevabifajebavunenagatumi.pdfIn PDF document text
    • https://site-1038794.mozfiles.com/files/1038794/posojegizobefipopag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7868/3291/files/sunoditevunixomajil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8196/9063/files/punebovumebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2001/2696/files/ripemetavujomirenitabaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7396/1635/files/fomiranezizesub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa3575c-c135-45f9-ad13-d4ac537c1956/fiwegara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0db18395-f95a-490d-a0db-b5fb1e8883c1/25882719460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bd98bd1-83e5-4364-b781-c301e25b3a65/sunadawifedesesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecfe9097-ba09-4992-b894-c7f3aa4cd384/midopit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b21d3bf7-be52-4a24-8a91-8fc2b03bb3c3/80929656985.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000574e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 5312 bytes
SHA-256: 8ce468613a11e98c93fe9bf41d8f032c733b7efe837b74e7c4ddaa2255bc74c7
font_01_sfnt_off0000694e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694E 11304 bytes
SHA-256: ccb5ddf4de9664cf12fb9a7142ced5fe407232c2d278226c83e62fce36b61bc8

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