Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d519974c27c11a0…

MALICIOUS

PDF

46.0 KB Created: 2020-10-06 15:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 29acd0be84e186c6f797dee4b5759014 SHA-1: d02d3c43851dd5fa61dd5418740d91e7b987b0ad SHA-256: 8d519974c27c11a087f8001d9421bc927b7cd6dcf98bcd87809a5f8f7e315034
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link disguised as an 'Ap chemistry study guide pdf 2018'. The link, https://ttraff.club/pify?keyword=ap+chemistry+study+guide+pdf+2018, is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or redirection attempt to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ttraff.club/pify?keyword=ap+chemistry+study+guide+pdf+2018 In PDF document text
    • https://site-1040244.mozfiles.com/files/1040244/totoruvuterasadibe.pdfIn PDF document text
    • https://site-1039127.mozfiles.com/files/1039127/47893654750.pdfIn PDF document text
    • https://site-1048456.mozfiles.com/files/1048456/gegapuzer.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/maluza.pdfIn PDF document text
    • https://site-1041498.mozfiles.com/files/1041498/supuvegobetobobagasuf.pdfIn PDF document text
    • https://site-1039919.mozfiles.com/files/1039919/53234168810.pdfIn PDF document text
    • https://site-1041075.mozfiles.com/files/1041075/91936218945.pdfIn PDF document text
    • https://site-1043357.mozfiles.com/files/1043357/95368855685.pdfIn PDF document text
    • https://site-1038924.mozfiles.com/files/1038924/naravotenemeredokamad.pdfIn PDF document text
    • https://site-1042607.mozfiles.com/files/1042607/40932924534.pdfIn PDF document text
    • https://site-1036791.mozfiles.com/files/1036791/19294954715.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5d691232-ab1a-4056-9700-5edb484e6cf8/73238487725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8c89eb-47ef-4131-90fc-f97948e1b16b/55213824707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26daa296-ed3f-431b-b830-42c3ef03a17a/puzevubegagovudeputunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c218903-a9d6-4523-8f81-d105317a034c/suwivaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92f3f96e-954c-45ec-a922-f1e9fe5cd850/68793996514.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E8 5604 bytes
SHA-256: 615f6fc313c1c7a836ae2e88c22d2d38b8e1e454b5af5e928640914e7a6f5b57
font_01_sfnt_off00007b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B14 9996 bytes
SHA-256: b434943c14bc183f8de01fcfda008c5296c84069c8b1aeb5f9069235ff60f116
font_02_sfnt_off00009d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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