Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e89d9186878357…

MALICIOUS

PDF

90.8 KB Created: 2021-05-09 10:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a093fe535b6bfe0e0190941119f7a37 SHA-1: d1e959264b9763d3e16c53d3d5c074548aa48adf SHA-256: d9e89d91868783570a404fe416f6667431aab578267b5004f73010cda202a74d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting it is part of a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically as a phishing or trojan delivery mechanism. The embedded URL and the document body, which appears to be a corrupted or obfuscated prayer, are likely lures to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=oracion+al+espiritu+santo+para+sanar+la+mente
    • https://cdn.sqhk.co/pesamelez/lpQaghX/vulowopuxesetufuwijiti.pdf
    • https://fabegobidik.weebly.com/uploads/1/3/1/4/131437275/8f99f7c.pdf
    • https://lizekolu.weebly.com/uploads/1/3/1/3/131379949/6500011.pdf
    • http://sisogelodaze.medianewsonline.com/birthday_calendar_template.pdf
    • https://cdn.sqhk.co/bobavijiwoba/giVjiCM/vector_equation_of_two_points_calculator.pdf
    • http://bitoxifa.sportsontheweb.net/19209952677.pdf
    • https://dusuwepi.weebly.com/uploads/1/3/4/5/134589125/4187063.pdf
    • https://kexibisurek.weebly.com/uploads/1/3/4/3/134334279/lonelajexafafe.pdf
    • https://cdn.sqhk.co/kafosine/jgWgjif/banjara_song_ringtone_pagalworld.pdf
    • http://vigirorimikana.medianewsonline.com/sql_server_2020_tutorial.pdf
    • http://xitawefavam.medianewsonline.com/fepelilojoluge.pdf
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/nixezutetibupimojix.pdf
    • https://nagobajega.weebly.com/uploads/1/3/1/3/131380413/mofexuxipolo.pdf
    • https://zifimegepero.weebly.com/uploads/1/3/4/6/134601706/b8d915772a4fd8e.pdf
    • https://cdn.sqhk.co/rijunawep/jfhjgo6/predator_fishing_boat_grimsby.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a2c0e80b-207c-4d55-bb9e-d8f8890b9c05/standard_painting_canvas_sizes_in_cm.pdf
    • https://uploads.strikinglycdn.com/files/cd51cc56-21fd-4868-9cd8-a1fb8e875d3b/delonghi_toasters_reviews.pdf
    • https://c207dc97-0cc9-441e-8caf-a702c1639d46.filesusr.com/ugd/36abe8_aeccc284e09847aba55db591f28c12d5.pdf?index=true
    • https://793776f3-68b4-44d3-947a-596ce2c6f652.filesusr.com/ugd/4e977a_ee7f23dc591543dc88a0df003596b4b2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/69fd042d-61f4-432c-b498-800b0beeb4fe/1067224685.pdf
    • https://uploads.strikinglycdn.com/files/7845d140-4767-4757-9f95-3d8dc6ab21ee/6788805373.pdf
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_59a2597142024026810ef6d708cbdaf8.pdf?index=true
    • https://3dd85f33-233b-4b3c-8e53-142bc8307eec.filesusr.com/ugd/8df890_23fbbb592a934c389840e61e0c19181b.pdf?index=true
    • http://megugasawixige.onlinewebshop.net/ragivigamad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120a0.bin
0617dd6c8275390a398d3dc53f48e82f4c00f24bacb58e257bd4a116517049da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120A0 5104 bytes
font_01_sfnt_off000131df.bin
df169a9fcb5f0beef4772007fbbe19fdeb9d1549da3c942f11663921c457cde8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131DF 13000 bytes

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