Malicious PDF — malware analysis report

Static analysis result for SHA-256 3738a1035a2ec101…

MALICIOUS

PDF

47.3 KB Created: 2020-10-29 00:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c170a6b4cc4feafb907f027c6d8eee35 SHA-1: f785d998d304151b3e2bfc8b17ca796fabf6ddaa SHA-256: 3738a1035a2ec101e74b877080c72cb24265616f52241f2fd010ebf90f947b76
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=bleezer%2527s+ice+cream+natalie+merchant In PDF document text
    • https://bagubabijotete.weebly.com/uploads/1/3/4/3/134319258/6987469.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/6772120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369313/normal_5f8ce4d656ba9.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/9a826.pdfIn PDF document text
    • https://kilunifogewawo.weebly.com/uploads/1/3/4/4/134457757/eeae5d90b39ffb.pdfIn PDF document text
    • https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/df128486c.pdfIn PDF document text
    • https://ranemexamegen.weebly.com/uploads/1/3/4/4/134440137/2426903.pdfIn PDF document text
    • https://sapakokejepudig.weebly.com/uploads/1/3/4/4/134457578/kituxe-dorop-fokupevuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_5f8e8ea21b381.pdfIn PDF document text
    • https://nugemezan.weebly.com/uploads/1/3/4/3/134359438/kitinizorepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368997/normal_5f91d42bbba83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f88a7f289d75.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005ecf.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005ecf.bin)
    • https://uploads.strikinglycdn.com/files/c767415e-c8c3-4157-8d15-f3169247f0eb/48482823904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3318/8762/files/free_johnson_outboard_motor_repair_manuals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d62ce6-71e9-4017-9665-27e527d3479d/58002833290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c84726c-42ec-4e3a-905f-f48c5bcf91ed/movimiento_circular_uniforme_acelerado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/thermodynamics_notes_mit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf90708-a96d-4ee9-b619-5debd51d25b9/seales_de_transito_preventivas_y_su_significado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6470/4155/files/12x1.5_lug_nuts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/android_activity_finish_with_result.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f54f392-f7b6-4d4f-bc00-eff324d31dee/pofoxesipeseve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2825/0276/files/label_parts_of_a_coordinate_plane_worksheet.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_off00005ecf.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000947a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000947a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 5172 bytes
SHA-256: 6080352e29d947d43bc4f5db2b1e7d7c573833b65b4ba17ee4bd2a2dee59b67e
font_01_sfnt_off00007046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7046 10580 bytes
SHA-256: 9b33379ab25c6026d20f1673e7bcd3a264bd2f1613c2888f0f2580115fdea782
font_02_sfnt_off0000947a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947A 17792 bytes
SHA-256: 1587df6781d9244080564cae736bb231e98cda21f62c8536d56d5f4feff96ede