Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bd4499975c1609…

MALICIOUS

PDF

49.5 KB Created: 2020-10-15 01:51:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a111ba274dd52ab056a3dcef220e827e SHA-1: fcbc2d2ca69b57ba95719dcec3887491605927bc SHA-256: 59bd4499975c16092b0ef882c5e1cd9697b5ac33f8c5883523577ae3c149cc87
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://ggtraff.ru/strik?keyword=terraria+dungeon+defenders+guide In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/a868c.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fibaxizimudez.pdfIn PDF document text
    • https://site-1043704.mozfiles.com/files/1043704/86731332445.pdfIn PDF document text
    • https://site-1043195.mozfiles.com/files/1043195/tovipofapedokamezet.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/nerazosedelijuzurero.pdfIn PDF document text
    • https://site-1040578.mozfiles.com/files/1040578/virogezoribagave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f8749b5746d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87680dc2feb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f876dc9f20a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8736df1f900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87051811a02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8717ccdb323.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/1/0497/9916/8163/files/combine_several_worksheets_into_one_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/97189619817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/1151/2986/files/robidafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9688/2334/files/44510668349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6030/0442/files/62683314960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4af0128-478e-462e-9554-b4505eaccef0/nudaripojatemof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8980be57-e06c-4a24-beac-4063f43afe48/96872490393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4461c5b4-bf46-4195-9407-7897ca4bf9c4/84441670064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97237429-5164-4066-bb33-472b06158d02/61883010819.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_off00008400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8400 4992 bytes
SHA-256: 0aa2f90cccb402722789b336ca8da8fa26cebbbcb1cf46c7f0d47b1bf0ae34eb
font_01_sfnt_off00009505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9505 10360 bytes
SHA-256: 5a4dcda213bc398af5a83d638adf7234fc31fc53df7e956b5fd4d9f0f25b117a

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