Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf282e81ce8c575…

MALICIOUS

PDF

57.7 KB Created: 2020-09-29 20:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a99554e35c1aaced76bc31f6af23357a SHA-1: d881bae75a515dd225c6ab9bfca33a660b0aea92 SHA-256: adf282e81ce8c575331e4fb70b28a7d7beed98a3dd67131ab442e2f46c70955a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to disposable domains and a known malicious redirector. The primary purpose appears to be directing users to external sites, potentially for phishing or malware distribution, under the guise of providing 'hadith bukhari hindi pdf' search results. The ML classifier strongly indicated maliciousness, supporting the link farm and redirector findings.

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/strik?keyword=hadith+bukhari+hindi+pdf In PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/goxusisexufalupazel.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/degobozazikotexuze.pdfIn PDF document text
    • https://site-1036689.mozfiles.com/files/1036689/puwumuvikubi.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/rekiwine.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/runer.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/32367146408.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/xoxufefuzimipiripifo.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/potazajupuvazulotareke.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/77060289476.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/71316513533.pdfIn PDF document text
    • https://site-1037098.mozfiles.com/files/1037098/5528819449.pdfIn PDF document text
    • http://tadavur.vtphisig.org/uploads/1/3/1/4/131482993/dejoza.pdfIn PDF document text
    • http://kirozowe.confetticakeshop.com/uploads/1/3/1/3/131379992/juvosodupufobow.pdfIn PDF document text
    • http://files.trianglewaterpartnership.org/uploads/1/3/1/4/131453352/xotubunisulo.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://fedorahosted.org/lohitIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FA 4736 bytes
SHA-256: e05fc912805d8b65a55443456b68d8cfa05c9693d57f71ac50a4c136928b1dcf
font_01_sfnt_off000078ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 10060 bytes
SHA-256: c112b1482026f2da76fc75bf9dc618f63d4dde6f9d68e1a639b601de877dd469
font_02_sfnt_off00009b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4B 18288 bytes
SHA-256: b001adfb0d84dd07af3c49abc14e0b06815b08fcf206629616ecec4786396482
font_03_sfnt_off0000b7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7AF 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
font_04_sfnt_off0000c5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 4788 bytes
SHA-256: fc5a28bf9dc51d5ef632299701d73d1f3e119bfd11775603bddbf187ed086851

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