Malicious PDF — malware analysis report

Static analysis result for SHA-256 911a479557300824…

MALICIOUS

PDF

46.1 KB Created: 2020-10-15 01:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0f09dab530f1c081e1bd4a121e61e835 SHA-1: 955012a66a61b02212e377afb845d0963ecb68b1 SHA-256: 911a479557300824f3f245aad42457a47b2977bedae01a3605f7ffa784eca9bc
124 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a '2020 mazda mpv repair manual pdf', likely a lure to encourage clicks. The ML classifier strongly indicated maliciousness, and the presence of multiple links to disposable hosting further supports a malicious intent to redirect users to harmful sites.

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://gettraff.ru/123?keyword=2020+mazda+mpv+repair+manual+pdf In PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/xozululililopa.pdfIn PDF document text
    • https://site-1040574.mozfiles.com/files/1040574/buzipinis.pdfIn PDF document text
    • https://site-1038710.mozfiles.com/files/1038710/46131586603.pdfIn PDF document text
    • https://site-1039419.mozfiles.com/files/1039419/zukuzobanifilejuv.pdfIn PDF document text
    • https://site-1041861.mozfiles.com/files/1041861/saligapivokiwawet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f876c6f5e33c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f876f227cfd4.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5337016.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/rufub.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/6775254.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/2706857.pdfIn PDF document text
    • https://site-1040360.mozfiles.com/files/1040360/dakekokogesuxijawavemovil.pdfIn PDF document text
    • https://site-1036781.mozfiles.com/files/1036781/50271378341.pdfIn PDF document text
    • https://site-1038555.mozfiles.com/files/1038555/5699554429.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6747327d-ec34-4285-b7f5-2da8b959bbc4/gupufefeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbdc2fa-ed1b-4ec9-9ac5-806cf39f6071/38597038897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4354b0-3850-4c3d-9742-0af3c04820c7/64106023047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74c878e-1457-4dbb-8694-3e3751ab1982/dokadunutaxavamexusizemuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ec25abf-4005-4c39-8302-45081320bb10/74748786965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/463c1405-d3d3-48b9-b3da-1adb9b5b0f69/zusawopawakiguvado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cebf3ab-6a9a-4847-9080-a8d09abf9474/83577090145.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_off000074ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AE 5300 bytes
SHA-256: dcb528d86cafc14cc4ee3e783f22de33d77da20db4f69b9869ecea84f295ec89
font_01_sfnt_off0000869e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869E 10676 bytes
SHA-256: a91f0d646ec71f9d1283eb4600afb57de19913154b0382d52d9e6837ae3b32e7

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