Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d54f8f7dc62fac5…

MALICIOUS

PDF

37.3 KB Created: 2020-10-04 16:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e88e73405f43a9f5288dc9a898cae479 SHA-1: eb1814d5402ca506a5536865e043214c0667e069 SHA-256: 4d54f8f7dc62fac5147fcf5fed5996f2074c70c99aef69d51659805d585519a1
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/strik?keyword=master+guide+to+drawing+anime In PDF document text
    • https://site-1037233.mozfiles.com/files/1037233/86851789369.pdfIn PDF document text
    • https://site-1037884.mozfiles.com/files/1037884/89651768471.pdfIn PDF document text
    • https://site-1038970.mozfiles.com/files/1038970/7261567484.pdfIn PDF document text
    • https://site-1039562.mozfiles.com/files/1039562/34549024728.pdfIn PDF document text
    • https://site-1037824.mozfiles.com/files/1037824/jolidopeka.pdfIn PDF document text
    • http://files.uicany.org/uploads/1/3/2/6/132682661/b6284ab.pdfIn PDF document text
    • http://jorikim.itsonlytaylor.com/uploads/1/3/0/9/130969300/pibipa.pdfIn PDF document text
    • http://files.mrhight.com/uploads/1/3/1/4/131406478/sibuze_najumogitu.pdfIn PDF document text
    • http://files.orangevalleycreations.com/uploads/1/3/0/7/130739769/wigibubolazuwe.pdfIn PDF document text
    • http://jaduti.praydanna.com/uploads/1/3/0/8/130874569/lutaz_tefinaj_rupunovujaju.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/36cb5215-a9e4-48e7-a8a3-1ff420b64bee/kelibinunojigofasasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b054c6-d49f-4e58-955a-586a19fabb8f/gerolozesewijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11d0771-4fb5-49a9-bf7b-0f6b8d708ce7/13940175661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0242/7554/files/is_well_being_hyphenated_in_apa_style.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/folep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3817/0526/files/inner_engineering_sadhguru_book_price.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3530/files/introduction_to_networks_companion_guide_ccna_v7_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5490/2677/files/97581767815.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 8

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_off0000520e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x520E 5208 bytes
SHA-256: d20ba8000e827cdde7515c2dc0925fe515ac5080fc67bb5121ae2b9d9ed83d98
font_01_sfnt_off000063c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 10660 bytes
SHA-256: a0e1189af428450226a395163ebccbb54ce6095e2f144ca3666683ec9f63bce5

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