Malicious PDF — malware analysis report

Static analysis result for SHA-256 8593946ba19f387a…

MALICIOUS

PDF

42.4 KB Created: 2020-10-05 17:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bdb414864739a20b088f44c6ff2d0325 SHA-1: f7c018c66374a02aba9aecd03351ce275e913ea6 SHA-256: 8593946ba19f387ae939c2d702601e55ccdf005080557bc713c7da07ae002108
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=the+war+on+carbs In PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/lugoxoludefiliwezinu.pdfIn PDF document text
    • https://site-1036737.mozfiles.com/files/1036737/situnibitutevozapefu.pdfIn PDF document text
    • http://fadevev.eatingdisorderdallas.com/uploads/1/3/1/8/131871787/d2c63480b8.pdfIn PDF document text
    • http://lejowu.sisiholisticbeauty.com/uploads/1/3/2/6/132681692/0e9ea98.pdfIn PDF document text
    • http://nemibuz.ostendmarineservices.com/uploads/1/3/0/7/130738836/913396.pdfIn PDF document text
    • http://files.araluen.info/uploads/1/3/1/8/131856852/kipanutilaxoke-dixuvomuziped-zitagovilere-fosoleto.pdfIn PDF document text
    • http://xajaz.juliedowling.net/uploads/1/3/1/4/131482952/e8b7698ef66c.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/1/0480/9634/6276/files/santo_es_el_seor_letra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/llana_esdrujula_aguda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4273/6790/files/98287099096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9371/1776/files/85177348042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9847/0555/files/scholastic_success_with_5th_grade_workbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d21b446b-10f4-4259-9660-3ee97fed48f4/26442188048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b663647e-9424-4514-904b-597ebe4fedc3/tapan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0efa41f2-f1be-4e8f-949a-3332cf64bc89/61539320003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4c52e6-777c-4264-9ff1-daacdc8e9db7/kowela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2340f77e-8f00-4c0b-957c-f44f7ed65d29/22744509756.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_off000068d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 5036 bytes
SHA-256: 39add40c17e26decfefb14afaf89cc08e3ea5102039987af4f25297a8eb6de3f
font_01_sfnt_off00007a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A00 10324 bytes
SHA-256: 6e7aeae319d414be52b6d9970527c077e2319ed8251e39bbf622cd6ea749837b

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