Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a2297d2824ea11…

MALICIOUS

PDF

71.9 KB Created: 2021-02-10 16:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 9eddb9b445d6c9c977992a0c8b867648 SHA-1: 7775e2eae747694c4d0c8bb20db4b4d0141ccc73 SHA-256: 08a2297d2824ea11b274f8539c9584f521a38b6d9f8ccae1a6bb51f10892d5ec
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, which is indicative of a link farm or SEO manipulation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to potentially harmful content.

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://seumenha.ru/aws?utm_term=mapa+do+brasil+estados+pdf PDF link annotation
    • http://barashik.space/92399809264sj943.pdfIn PDF document text
    • https://regafuraseni.weebly.com/uploads/1/3/4/6/134663643/2240942.pdfIn PDF document text
    • http://simultaneously.space/26345806985db44a.pdfIn PDF document text
    • http://vamoktin.ru/latest_android_for_samsung_j5d1mly.pdfIn PDF document text
    • https://rixexumig.weebly.com/uploads/1/3/2/6/132681576/5272549.pdfIn PDF document text
    • https://jaxedafotonomut.weebly.com/uploads/1/3/4/8/134885779/zoteromatasa.pdfIn PDF document text
    • https://cdn.sqhk.co/xusopusavo/hLifbgd/dragon_village_colville_wa_menu.pdfIn PDF document text
    • https://tifixexeruwa.weebly.com/uploads/1/3/2/6/132682204/f92966572.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/pomaxa/buttercups_uniforms_instagram.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/mere_bhole_baba_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/40568817838.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/guided_reading_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/riveduvulogeligovumil.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/babumoshai_bandookbaaz_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/cv_template_ms_word.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/51648544965.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_off0000d9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A2 5180 bytes
SHA-256: d92001829638c88581eb2545ae5f8d93c7aa8a463e2d0a3754233e190e0aaf27
font_01_sfnt_off0000eb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB56 12532 bytes
SHA-256: 7c916ea87a46f33c1178591bf38f9ab725f2d23724bde740fe94bb9bbfbaf011

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