Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ec704b66810df1…

MALICIOUS

PDF

78.7 KB Created: 2021-05-09 00:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: facf12c1bb5ebf5425506f59cdec2031 SHA-1: cc8507627bb1342b69e900d8d132f438e922ff5d SHA-256: d3ec704b66810df16bb8829e8157dd5734f85f7372969433b149152eb7e00f7a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL being https://golowaki.ru/strik?utm_term=only+love+is+real+lyrics, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to song lyrics, which is a common tactic for phishing or malware distribution.

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 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.
  • 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://golowaki.ru/strik?utm_term=only+love+is+real+lyrics PDF link annotation
    • http://cmbespaceclient.xyz/camp_x_ray_full_movie_download_720p1kp8n.pdfIn PDF document text
    • http://bomumerodozo.22web.org/45997875866.pdfIn PDF document text
    • http://suvolupijiro.mygamesonline.org/pemow.pdfIn PDF document text
    • http://sumigemag.mywebcommunity.org/post_concussion_protocol.pdfIn PDF document text
    • http://itash.space/edipo_rey_completo_descargarzm2yv.pdfIn PDF document text
    • http://jefevivavifax.scienceontheweb.net/24663267196.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/the_economist_magazine_download.pdfIn PDF document text
    • http://eeeeeyyy.space/fnaf_6_android_fullqa5mz.pdfIn PDF document text
    • http://vuvajujuli.mygamesonline.org/circulatory_system_project.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://050a9d39-d8a1-4107-8be8-b2b70b72e454.filesusr.com/ugd/5262df_7793dd72a2ba4ade9f533761ac269a5a.pdf?index=trueIn PDF document text
    • http://tajavuminona.atwebpages.com/99583304622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/910e6c43-e07e-4979-bdeb-2bb2bdf57e9b/zafajafomad.pdfIn PDF document text
    • http://sijaxulo.rf.gd/bodyboss_method_francais.pdfIn PDF document text
    • http://nekerudiwe.rf.gd/kptcl_ae_syllabus_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb21f6f-7c7e-4c87-b37b-0780c24b0d86/doctor_of_philosophy_in_education_abbreviation.pdfIn PDF document text
    • http://tuminexozuvino.atwebpages.com/cobra_29_nw_ltd_classic_cb_radio_manual.pdfIn PDF document text
    • https://97e6e6c8-040d-427c-ad66-6ef02350ae38.filesusr.com/ugd/9c523c_0c11f3070b1b4aed815151e10ab7705a.pdf?index=trueIn PDF document text
    • https://a9b72ff8-ed6f-4212-96c6-d467cc4e2332.filesusr.com/ugd/7f5649_7e207fa0da0449f5ba0d7fd412d2d3d3.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_off0000f144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF144 4980 bytes
SHA-256: 5258f65eb63eecc5f6f0ee608043b7f43ee78060698fb11e8a1d36088c524437
font_01_sfnt_off0001024f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024F 12404 bytes
SHA-256: 23ce4bbc40c366c75808fc16da97d614ae67597c3828f4f21e8c19099e2e098b

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