Malicious PDF — malware analysis report

Static analysis result for SHA-256 2994e263edcd49ef…

MALICIOUS

PDF

102.5 KB Created: 2021-03-24 01:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6dfb408002f6f789b2c5af33bd20ea24 SHA-1: d3e880288c71ea29cb9e065bd77e94f5c8ff005c SHA-256: 2994e263edcd49ef3c5a346f8defe183fd7768fc120ace077136175fbed31e75
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of an embedded URL and the PDF_SEO_LINK_FARM heuristic strongly suggest the document's purpose is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • 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.
  • 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://maypoin.ru/wix?keyword=roblox+got+talent+piano+sheets PDF link annotation
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/7814228.pdfIn PDF document text
    • https://tupedofezelazib.weebly.com/uploads/1/3/4/3/134368784/67c2ad31509f06e.pdfIn PDF document text
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/kunos.pdfIn PDF document text
    • https://zigamebujadosa.weebly.com/uploads/1/3/4/7/134745820/perijanuwi.pdfIn PDF document text
    • https://fugurisugo.weebly.com/uploads/1/3/6/0/136086283/34fc9055eaf.pdfIn PDF document text
    • http://firejifanop.iblogger.org/dakejelituri.pdfIn PDF document text
    • https://kajubuti.weebly.com/uploads/1/3/2/6/132680994/zotojifafegixiwuwod.pdfIn PDF document text
    • http://dowakofevumamol.22web.org/jipidipodufalarasukirug.pdfIn PDF document text
    • https://vokugovu.weebly.com/uploads/1/3/4/5/134598923/papibodatamo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e019a6c-23ba-4d31-9ebd-f155bac6ca0b/76769716839.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/65351175366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd51788-1ed3-4df9-9457-826fdf6bf2b2/how_much_to_learn_graphic_design_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba469e92-08c2-4037-800e-ce3ea436a074/the_missing_million_film_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/exchange_2010_mailbox_folder_size_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48feb2e-3f10-4c32-bacf-cf4ae017f5b0/fojadukifusupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f03a61df-3795-440d-a1d5-536c141e6fbe/fedal.pdfIn PDF document text
    • http://nifopufu.epizy.com/bersa_thunder_380_review_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63907ad4-fcbb-4116-ac2a-839258cb7eed/wilokopetebovamara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3733c4bb-cdfb-4d24-b8c6-7921639dbc30/how_to_find_true_market_value_of_a_used_car.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/2015_bmw_m4_manual_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5cc5a4b-f909-4f2b-9022-18a0a21a8923/how_to_stop_knee_pain_while_sleeping.pdfIn PDF document text
    • http://regajunimanos.rf.gd/97943512194.pdfIn PDF document text
    • http://ladipuxot.rf.gd/82725110939.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13194 2952 bytes
SHA-256: d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47
font_01_sfnt_off00013c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C22 5200 bytes
SHA-256: 8f897ec2c9e7086f2a27b588f40e4e17705b9576ea98c6ba637fc6356badfcf7
font_02_sfnt_off00014ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DDD 11568 bytes
SHA-256: 66dcdf52cecd66c4caacc686b6382fd33f2baee5f6a94c5049433199c0a281d0
font_03_sfnt_off00017545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17545 16808 bytes
SHA-256: fb7b2dc48e1c82fce0487a55f92de73b03104841255ac6944768e5b2092455f1

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