Malicious PDF — malware analysis report

Static analysis result for SHA-256 b028eebad2cd67db…

MALICIOUS

PDF

78.7 KB Created: 2021-04-07 06:22:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f21ff42d8edb171cc4f17d5d4d0789fe SHA-1: 2042c4b68f8cf667e9ba2d9b452d410c49a180e3 SHA-256: b028eebad2cd67db0bb402ba88045e38490ca69efa33c22345752df40ff455e7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/award?keyword=akuntansi+pajak+waluyo+edisi+6+pdf PDF link annotation
    • https://mogisitubetaw.weebly.com/uploads/1/3/4/4/134496388/4573585.pdfIn PDF document text
    • https://liwitozawaben.weebly.com/uploads/1/3/4/0/134042828/rowudezabujere.pdfIn PDF document text
    • https://pusenosegunilo.weebly.com/uploads/1/3/4/7/134705238/wasof.pdfIn PDF document text
    • https://vetexugosopaviz.weebly.com/uploads/1/3/0/7/130738505/5477312.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/assumption_synonym_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/71291196607.pdfIn PDF document text
    • https://48e5b1ff-25fb-49a4-826b-3ad3f3a15688.filesusr.com/ugd/0d632a_1b2ce8093e54454fb72ee90a6daa0a97.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7508f3fd-3bd0-46c8-b52c-d2280ba09736/the_leftovers_book_ending.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4ef82e7-6e8b-463c-828d-ee996ef27564/japakap.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/vufosilevofigomokix.pdfIn PDF document text
    • https://73ea35ec-f0b0-4773-8bcb-d62b778c7de8.filesusr.com/ugd/a8e976_67f9fe6506cc4d40b85362a671add894.pdf?index=trueIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_7ccc86d696b34ac3b434e7fe764ec18c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/948bdcd6-c15e-43a1-85a0-6e076675de5b/how_to_start_stihl_hs_45.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afae7b92-d898-46e4-badc-b77eeb238eb8/the_hobbit_book_summary_shmoop.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/fotuf.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/english_to_spanish_talking_dictionary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/61355113921.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/potential_transformer_wikipedia.pdfIn PDF document text
    • https://9fd063f5-a6e2-47f0-a1c8-15c646e36cc9.filesusr.com/ugd/ee11ea_ed53582514584ed38285e9e5d943413d.pdf?index=trueIn 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_off0000f56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56B 5416 bytes
SHA-256: 2fd1103c574da18d9baed68bfd5be40e202417156a8bce948e8c19f8ad0cac3d
font_01_sfnt_off00010812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10812 11084 bytes
SHA-256: 2293a7bdaaf7a7b57b3cf85c1670a76d15972e8a0c1b41037f8193d074bdbede

Open this report in the interactive analyzer, or submit your own file for analysis.