Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6f2dcf0423e0cc…

MALICIOUS

PDF

45.4 KB Created: 2020-10-17 17:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d2c8c70a737035464cb674983901ef9a SHA-1: d753246f3c952fe722cc50a26bf9384c73e5371a SHA-256: da6f2dcf0423e0ccc19c2df6cc124b8d28949ca0698a1d572e6ddc0f97e6e195
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=gta+vice+city+hot+coffee+mod+android In PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/3218686.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/damibezivubuv_rewobadojin_viwetegomi.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/1395737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f889ea639d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f894c3054a56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f8a0d93914d9.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/5051530.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/1/0429/8155/6375/files/dc_wheres_my_refund.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2747/0235/files/true_skate_hile_apk_android_oyun_club.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c26b58c-74c0-4098-9e51-f2fa6240bc81/77587073758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828a692a-f56d-4898-9f47-8a0476f8ddc7/72336920199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da25ddd4-d25f-48c4-9fc2-2ffa28d61d0c/57408972341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02507df3-ea67-48c0-a49d-260eb9c11419/jobajuzedesagadekokodi.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_off00006aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAC 5244 bytes
SHA-256: 01e873a63bb1498eb5b57836717120f8cd5ea518e3bcd2084189da9321453972
font_01_sfnt_off00007c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6B 13916 bytes
SHA-256: 45f4c6b6e0bd9b2472a63081d684323d7c85655569773dd6d05ea80eb80e69f9

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