Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecb122dfab849d8e…

MALICIOUS

PDF

48.7 KB Created: 2020-10-25 09:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 96ef3df5b9457fa147f545c858c5d7b7 SHA-1: 40e98373d782764659224ce4e4cca6deb6338bef SHA-256: ecb122dfab849d8e3b6a0f87738b186e554bd37b925bc1b27d2d69533760ea4b
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/pify?keyword=keithley+2400+manual+download In PDF document text
    • https://vefavufarexuba.weebly.com/uploads/1/3/4/3/134315694/lofekarudavuna.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/tasolavus_dafewo_keweponetovux_pavuwokilulon.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/7939735.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/godoto-jubovebivowoze.pdfIn PDF document text
    • https://sedezexe.weebly.com/uploads/1/3/4/3/134342112/9c7b56.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/tatesabalisida.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/tavowibekonivubuf.pdfIn PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/6865675.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/d4404.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/edbd2edb1a75.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/bodajetosason-bipejugibelumar-dupatiror-zabupuzuta.pdfIn PDF document text
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/672415a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dadupawo/zogipo.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/complete_list_of_dams_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79abb17-7706-4e0f-adff-6f89dce4f833/notusojabukim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07372800-9255-4480-881d-46f7a2a22e40/11655668885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/245be2e0-9251-484e-aa88-b6011c3f390d/xuxudolozibitonulodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4164/7523/files/a_rhyme_a_week.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8873/5125/files/water_cycle_in_a_bag_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4764/7894/files/1184472658.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_off0000803c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803C 5316 bytes
SHA-256: 16d666cecfc1e1e4f75dac7a5c4640fbc99dd820851f92537ff3d7ce56908c8d
font_01_sfnt_off00009253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9253 10256 bytes
SHA-256: 64b9c6917d98bbb734594d110d4ca532e3c5fc2d1ce2007c23f7590e7b93fe2e

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