Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eec33e17cf5e69f…

MALICIOUS

PDF

57.7 KB Created: 2020-10-05 00:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 329444afc50083a225082a6b301f220d SHA-1: c83c77ec0780a2d16ac16acca357559a018ffc8b SHA-256: 0eec33e17cf5e69f2b58a0e61d11bcea0a97d309968588ac7bdec5e808537394
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://ttraff.link/pify?keyword=a+friend+in+need+ac+odyssey In PDF document text
    • http://files.antiguoantiquesanddecorative.com/uploads/1/3/2/6/132680994/megenulunupag.pdfIn PDF document text
    • http://gititis.tracepickering.com/uploads/1/3/0/7/130739963/c15529b.pdfIn PDF document text
    • http://files.pemmensgolf.net/uploads/1/3/1/3/131379612/febokibilodirina.pdfIn PDF document text
    • http://nejid.maggiebathory.com/uploads/1/3/0/8/130873822/8d7eb82b31fc18.pdfIn PDF document text
    • http://lavadukul.tidytimeservices.com/uploads/1/3/2/6/132680981/5344373.pdfIn PDF document text
    • https://site-1036852.mozfiles.com/files/1036852/wuxapup.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/forafuxojakera.pdfIn PDF document text
    • https://site-1037189.mozfiles.com/files/1037189/97732947338.pdfIn PDF document text
    • https://site-1043833.mozfiles.com/files/1043833/pivorobod.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/wufexomimukaz.pdfIn PDF document text
    • https://site-1039278.mozfiles.com/files/1039278/6851042788.pdfIn PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/vigusukiseso.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/2487125931.pdfIn PDF document text
    • https://site-1039562.mozfiles.com/files/1039562/25808063292.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
    • 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_off00009787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9787 4784 bytes
SHA-256: 350a2dd4de7bcf1888da20978cb0a901ef5cea58091ab3cdcd9eec9ea0f1e779
font_01_sfnt_off0000a7ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CA 10828 bytes
SHA-256: 543794a1f6dc10f8f7aa1da90d59bd408eb5e24e20aed3122f31413ca0b35448
font_02_sfnt_off0000cbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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