Malicious PDF — malware analysis report

Static analysis result for SHA-256 3404637e1176b2b5…

MALICIOUS

PDF

43.0 KB Created: 2020-10-29 06:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a3bee967ced3834bd40a3b0291385abd SHA-1: 5f67b3bd03ec6c880d6fb62539c544da889b6da5 SHA-256: 3404637e1176b2b5676e7b9e4a36086c96b7fff92974ff299fd2879950487536
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=east+central+library+north+branch In PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/7207546.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/9eee2bec755e515.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/bd6457ff408.pdfIn PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/7091141.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/rigajeviwor_megasunip_pezojopip.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/mutog.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/lexumugiw.pdfIn PDF document text
    • https://fabedajigunud.weebly.com/uploads/1/3/4/4/134480588/napowoxalazi.pdfIn PDF document text
    • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/3501671.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000066bd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000066bd.bin)
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/honda_ecm_2800_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0871/9518/files/wajajefipubunuxuta.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/rig_veda_in_malayalam_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af85d460-ec19-48de-b8a1-54c37bb8970c/678523051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2384e8c6-2097-443f-93a0-c14bc00a8a35/forukatixetejilonekozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cea9340d-74e2-4185-a237-e24682e68f38/fodokukid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c31cd22-cbf3-4c4d-80b1-be2014bdc21e/sexy_indian_girl_porn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84948668-2324-438a-88d7-92335f9b7cf2/penumajenusulus.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/jikifazuwutuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/92111642385.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/zunokipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49faa22-b565-409d-b31b-0a4f9b014188/beer_lambert_law_questions_and_answe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8098/3742/files/didigafifij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2072fef4-4dcf-4a54-bb82-a0ede13c429c/countyline_25-ton_log_splitter_ytl-016-919_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d824e720-da02-4be7-8d68-cf312a742e04/happier_tal_ben_shahar_free_down.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/logical_connectors_exercises_with_answers.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_off000066bd.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BD 5088 bytes
SHA-256: b4374fb5f0091f666dcc78e8b26adabec5296d035180e043f75a6d65c5528eca
font_01_sfnt_off00007806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7806 11540 bytes
SHA-256: 0fa964aa08122d6b182eb0783060c8dcab00099e5c5e2a42e103b2eff01ad803