Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee75661a42e7cf5…

MALICIOUS

PDF

75.8 KB Created: 2021-04-25 00:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 64870ffd46968b401548c669045ebffa SHA-1: 54ea4238fc3857385d47f738c51da24997989807 SHA-256: cee75661a42e7cf526d6965d240d536869589a342733580ae956fe400f6779f4
96 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 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 0.9995

Heuristics 4

  • 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://baarspo.ru/strik?utm_term=navy+e6+advancement+results PDF link annotation
    • https://vewawuwidavejo.weebly.com/uploads/1/3/4/4/134403009/69a75115.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/befilikiwam.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/05de7f2.pdfIn PDF document text
    • https://buxenawemino.weebly.com/uploads/1/3/4/5/134581697/fifidivoj.pdfIn PDF document text
    • https://kolabobinojojiv.weebly.com/uploads/1/3/4/8/134880551/4779784.pdfIn PDF document text
    • https://pozivikebesar.weebly.com/uploads/1/3/4/7/134759309/2873959.pdfIn PDF document text
    • https://noperutepa.weebly.com/uploads/1/3/4/7/134721309/kupoloro_wuvujoxoj_lexepagegum.pdfIn PDF document text
    • https://wumajifutagije.weebly.com/uploads/1/3/4/7/134731747/b5c70d.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/fopalew/71985397262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/951adf88-dca7-46de-8603-380d6381e62c/94521344240.pdfIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_82f8032bce954eac9baa598cfb0f9e1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pusixa/dd_dragon_turtle_stats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e141325-eb4a-415d-97ba-7ace0c9ecb28/padanigereruwejelodezax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cda4fd3-34c8-4a03-ae67-243f3aced2b2/survival_gear_list_for_alone.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/how_long_should_a_doro_battery_last.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_6d46c336f5814f9dbd58faba491527b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/5th_grade_vice_president_speech_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/vivaldi_font_gratis.pdfIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_12f6f51c31dc48edb24f603e6b627fd5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/falufusu/video_facebook_messenger.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/subudi.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_8f68252a25834c698f9bdd6707f9c79a.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_off0000e7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F9 5372 bytes
SHA-256: 67b594a3a444f87cfd603ac872feba4949fc38287ed5c40ab5855dd6e6efe3c2
font_01_sfnt_off0000fa3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3B 11496 bytes
SHA-256: 7a32e46560daf3c724b35e2a4fbb7c9ecacbc467efdc3c89b9532acf5f062e7c

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