Malicious PDF — malware analysis report

Static analysis result for SHA-256 f667300327821e47…

MALICIOUS

PDF

44.8 KB Created: 2020-09-30 02:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ed9fc35434f4511296d311d4f6501ab6 SHA-1: 6c65286077fd43b77e89e636ee664ad5206ff120 SHA-256: f667300327821e474a5c31648bed09b1dafa5875f18939e79b4ff4e3bf04e1bc
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL and several benign-looking URLs, suggesting a link farm or redirection tactic. The primary intent appears to be directing users to malicious infrastructure, likely for phishing or malware delivery.

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 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.
  • 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://ggtraff.ru/pify?keyword=el+de+la+sabana+mean+in+english In PDF document text
    • http://fexaxu.guidetrainingbotswanaafrica.com/uploads/1/3/0/8/130814623/6754113.pdfIn PDF document text
    • http://files.cocktailsntunes.com/uploads/1/3/1/8/131872203/40159.pdfIn PDF document text
    • http://kelezog.derekrecks.com/uploads/1/3/1/3/131397997/fokowovu-xapasanixogu-fedimovedukuf.pdfIn PDF document text
    • http://xuritep.nlbeekeeping.com/uploads/1/3/1/8/131856456/popenedexexelu.pdfIn PDF document text
    • http://sigotom.carpetcleaninghuntsville.com/uploads/1/3/0/7/130739732/kijopotaren-lafemedugupig-ziguzovof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0134/8002/files/school_essay_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9850/5115/files/electric_circuit_breaker_panel_directory_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/the_outlaw_josey_wales_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0250/files/73175281052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/nodoreravativozomatexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/jasebogegox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/able2extract_to_excel_converter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fb5de66-512b-4534-98e2-f0d5ed22ad6b/felofevuwebifasike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e9bb78-b729-45e7-8c33-0d62c2fa9d16/8279643912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a1593e-e940-4ecb-933e-7f107aa83287/liwim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eacfe1a-0eac-4891-b0f3-58c9db69d64a/ravasokunofafufasaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e192c9c-bb24-4890-a5a9-b95577cccf99/wewozatapofobuxux.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_off00007092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 5240 bytes
SHA-256: ba2ed11dc2d624e95a6ddc4a775368c49619d706272b9df55a2ae04b3033550e
font_01_sfnt_off0000823a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823A 11076 bytes
SHA-256: d079f8c61785b81fff9516a4fb7790bad4cd3302351233d2595963840b72bb84

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