Malicious PDF — malware analysis report

Static analysis result for SHA-256 944a19726df00f56…

MALICIOUS

PDF

84.1 KB Created: 2021-04-03 07:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 071fbd8ccfd79a50f2bd11a45ae2436f SHA-1: 58f80655a7c4a9ceadf7ebccc6f81bd60a8cacd9 SHA-256: 944a19726df00f56039ac05b68940cc8b17fa38488098953391c3848195fe9fb
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=how+do+i+program+my+comcast+remote+to+my+tcl+roku+tv PDF link annotation
    • http://izzzaaa.space/subtlety_rogue_pvp_guide_3._3_5g1o36.pdfIn PDF document text
    • http://litvinenko.xyz/a_dance_with_dragons_ending_explainedqdqqz.pdfIn PDF document text
    • http://mudikovarew.mygamesonline.org/the_master_swing_trader_free_download.pdfIn PDF document text
    • http://biolinkus.me/skilsaw_hd77_power_cordiyy4w.pdfIn PDF document text
    • http://pebunoguge.mygamesonline.org/fawiridaxilujizo.pdfIn PDF document text
    • http://tuwimig.scienceontheweb.net/fetumazokubezin.pdfIn PDF document text
    • http://sewatumafuta.medianewsonline.com/gukisone.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/aws_cloud_practitioner_exam_questions_free.pdfIn PDF document text
    • http://zootime.store/wujibogomakesoligamufa9yx5h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/chrissy_teigen_cravings_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/mupijapekizobinejodi.pdfIn PDF document text
    • https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_213c1c2c087841de9cdbf566d02ab3ac.pdf?index=trueIn PDF document text
    • https://e1bd05e7-a2ed-43df-b5fc-9bc8ee0b1a84.filesusr.com/ugd/08acf3_f82ba8da9825446287718cfa48a13a6d.pdf?index=trueIn PDF document text
    • https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_765778d0ac6b46c7a821b8a076335e93.pdf?index=trueIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_ef2bfa566c924941b3bef98d367450d5.pdf?index=trueIn PDF document text
    • https://992bddda-184d-467f-a815-0165b41a2208.filesusr.com/ugd/69695d_42d393bb02de4f02b5038728f02ec53a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/bhagavad_gita_in_tamil_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/introduction_to_computer_programming_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/lg_keyboard_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/7511779289.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/gizuduburag.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE5 5448 bytes
SHA-256: a65101105f9d058ff509e70937a7dabe26816386c36f6fb295ca05378522c37e
font_01_sfnt_off00010f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F90 10860 bytes
SHA-256: 42df7eab7c7d2aa89582055cf5eb845e1d6982a3d5de20f3a90f7502404a3773
font_02_sfnt_off00013498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13498 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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