Malicious PDF — malware analysis report

Static analysis result for SHA-256 147c19a37fc93ae4…

MALICIOUS

PDF

85.8 KB Created: 2021-06-01 13:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3da610abde3f122785ff3daca90263f SHA-1: d69478a1a4dbe807edcd5c432f953c4ea1d0216e SHA-256: 147c19a37fc93ae40c1795ab25d7855d18a54632cb440bd34daab66c9e2a45ec
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards malicious intent, likely to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://garglob.ru/pbw?utm_term=are+narwhals+close+to+extinction
    • https://wixiwifutavoma.weebly.com/uploads/1/3/5/3/135301275/7863873.pdf
    • https://xiwesawubofu.weebly.com/uploads/1/3/4/2/134265581/tivezowa-bepasuzibabif-dodegukivavep-ropik.pdf
    • https://sasadopebob.weebly.com/uploads/1/3/5/3/135324308/b0779de96.pdf
    • https://nuluvefum.weebly.com/uploads/1/3/3/9/133999802/5814889.pdf
    • https://mawikimame.weebly.com/uploads/1/3/4/2/134235565/1070594.pdf
    • https://kewesolatuveg.weebly.com/uploads/1/3/1/4/131452958/9ec217.pdf
    • https://mifojarodileg.weebly.com/uploads/1/3/4/7/134707921/mizowepu.pdf
    • https://zudimawavisutet.weebly.com/uploads/1/3/1/6/131606198/02dd10d.pdf
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/3284961.pdf
    • https://momobalujinas.weebly.com/uploads/1/3/2/3/132303205/3308039.pdf
    • https://sajowomifekorur.weebly.com/uploads/1/3/4/3/134314212/wesutuduvukara_dowufusuv.pdf
    • https://rutobugexamaxip.weebly.com/uploads/1/3/4/5/134508198/pipelopowevowil_towanetu.pdf
    • https://baduxobenef.weebly.com/uploads/1/3/0/7/130739850/9078230.pdf
    • https://romemigevowuf.weebly.com/uploads/1/3/4/3/134335991/sisugetes_lilufijazasumo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/533d0588-5e9c-412c-add7-bb4ea10063aa/can_sex_offenders_go_to_mexico.pdf
    • https://uploads.strikinglycdn.com/files/9ff94e5a-bf76-4374-a177-9023e02e373c/89371815620.pdf
    • https://uploads.strikinglycdn.com/files/92cd722c-e173-4887-9d1a-e7693e1b3912/pasimovapeselurowubawe.pdf
    • https://uploads.strikinglycdn.com/files/f9ff165f-fb3e-4853-88f6-179d83715b23/avengers_movies_tamil_download_2019.pdf
    • https://uploads.strikinglycdn.com/files/93a72afc-5869-4363-9b57-1eb06ae10b34/33838419508.pdf
    • https://uploads.strikinglycdn.com/files/34296321-0eab-451d-8e32-d86307e4ec5f/91489329652.pdf
    • http://zikupuzajix.pbworks.com/f/92328094771.pdf
    • https://uploads.strikinglycdn.com/files/300ac270-c3f1-4c9a-95b1-88a5e9679b16/p90_workout_plan.pdf
    • https://uploads.strikinglycdn.com/files/da5d66eb-29f6-448c-9c7c-d27a9bda9e79/what_is_a_proper_sentence_structure.pdf
    • http://siruzosu.pbworks.com/w/file/fetch/144448548/ms_subbulakshmi_sri_venkateswara_suprabhatam_mp3_download.pdf
    • https://uploads.strikinglycdn.com/files/0c4b592d-1cc9-4508-8c10-8cb5832f958b/wetamalifakifosibufuvanor.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_off00011126.bin
621b90d6f11b3361d883b1690ae02bde179bed8ad973bff7ce42e334245e5164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11126 5036 bytes
font_01_sfnt_off00012255.bin
f2e26403d0c8e6b8bd48db3483cf57bbe2e9e7371bf62d0e3baae787f41d98aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12255 11480 bytes

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