Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddddcf17e8f201c5…

MALICIOUS

PDF

43.2 KB Created: 2020-10-15 05:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 797724ddd5ebb578d1332aa5ee0ec631 SHA-1: 6584c64d97c90003a0eec4bd4fdab2f0742ed4db SHA-256: ddddcf17e8f201c574658fa4ce471de800be2e4cbf7fdf77fc979607b8230125
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://gettraff.ru/123?keyword=most+misused+verses+in+the+bible+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f878cddb4629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87190b71a2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f874ce7765eb.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fibaxizimudez.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/pirerefaxazisosivid.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/kozasoj-gapuro-zuwidaru.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/88cf5077-e033-4422-a491-eea7b35773ff/56698322273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980c513f-4d19-4b71-a290-c66f286063c7/tonev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9946969-a415-4b18-9acc-c1ab79f1eded/65896425351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/441dff35-54a0-48fc-8cd0-617710f41449/lilexaxeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d9eba62-297e-49c7-a9a0-d74afa576a8d/fifimenag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0082d3c6-800b-4412-b026-11bbe3571113/50786668957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0edc121c-d9d2-47a4-897e-a643fe96b5cc/14212614209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b01693-bdfd-43f8-8a18-f962a2d569f3/sasefoxilowezonasubeb.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_off00006bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBD 5276 bytes
SHA-256: 6b13157dbfbce084112c9f20999f041e3b84e59c2ff9035dd3e03326623c5dea
font_01_sfnt_off00007d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D88 9820 bytes
SHA-256: 85dd70bd28d328934afa5f4385f6e0114ddcdbf20b2c724d6ae94cf5a8ef998a

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