Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c583ccc62ccc33e…

MALICIOUS

PDF

42.4 KB Created: 2020-10-26 14:53:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7d064a7890b09eb0eb9950ef18833506 SHA-1: e2960b342596e38508be0ae4cb8d5425eeabb19b SHA-256: 2c583ccc62ccc33ea5a4a52e683a563b9f00a615c1902225afce804a26229b35
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/aws?keyword=pdf+file+online+crop In PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/difad-xopuj-midabebosug.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/vajabasezepire.pdfIn PDF document text
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/suwaduniwudanora.pdfIn PDF document text
    • https://vajuwapokovis.weebly.com/uploads/1/3/4/3/134361820/8943753.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/7694707.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/sapag-pumeda.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/pikus-tuwetal-voruvereb.pdfIn PDF document text
    • https://bevokelas.weebly.com/uploads/1/3/4/3/134310014/6666699.pdfIn PDF document text
    • https://rapokivagifo.weebly.com/uploads/1/3/4/3/134338569/sajax.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/7543097.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000687d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000687d.bin)
    • https://uploads.strikinglycdn.com/files/2fe6d974-d6e8-44a1-940d-d7007577ad1e/24215306575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc90b4dc-6f93-4635-8d42-5f6a8de1e7dd/masifikitowamoxeradewufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb2f1a41-875e-4e8d-9ab6-b97e108db2c4/diagnostico_comunitario_y_sus_elemen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb76f826-7526-4d61-9d11-d76987ba59e0/todisaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9067/2293/files/wow_vanilla_thunderfury_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15607cd3-e7e1-4715-b849-879a7188259a/65930180942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd26af92-0071-47bc-95e9-a6a1fa3ba9e0/mukini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c3b530-13e0-45ea-93ba-609b0c0baafc/14040561163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671c391e-ac32-4b6e-8a1f-e0cc4c924617/wilderness_survival_merit_badge_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/75458627994.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/29915338015.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/83381394074.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 extracted file (font_00_sfnt_off0000687d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000687d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687D 4764 bytes
SHA-256: 06424ae31d1eef2dd149a571b990297b80e1c552cee5c2c10232098cc4a0c43a
font_01_sfnt_off000078b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B3 10536 bytes
SHA-256: 1f351fa5b193596977e7480a80af9fe1ae464af0579b399a234a668598405f60