Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e59d6698cc857a…

MALICIOUS

PDF

75.5 KB Created: 2021-03-08 16:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6da14d40182caafaf0ac09f99fb26eb1 SHA-1: 98f1a6186718bbabe85f5304e538f257c09cdd37 SHA-256: 14e59d6698cc857aa5468b1afe0d68933f3effce055bbed0f28a47eaf6256362
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, indicating a link farm designed to obscure malicious destinations. The primary malicious URL identified is 'https://xezojetit.ru/wix?keyword=universal+wave+equation+worksheet', which is likely used for phishing or to serve a secondary payload. ClamAV detection and ML classification strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/wix?keyword=universal+wave+equation+worksheet PDF link annotation
    • http://fontawesome.iohttp://fontawesome.io/license/In 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://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_b5e24c3b47dc40ce8ae3d47829a1f710.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/59bf0d8b-6f29-479e-9056-042b764a8ba7/pays_basque_en_france_carte.pdfIn PDF document text
    • http://mutifitiwexo.epizy.com/alantakun_part_4.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/short_guided_meditation_script_beach.pdfIn PDF document text
    • https://de2a8dfc-dc8d-4d62-be3b-f97abdd17bf6.filesusr.com/ugd/c722c2_31c567c3b6da4cb0997991c841beb328.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9013ec64-e331-48ac-adeb-07e1a288bf8e/hp_scanjet_4500_fn1_driver_download.pdfIn PDF document text
    • http://setevibebevu.epizy.com/dekavuzutotepidibinevemol.pdfIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_52e503935a984394874a41520fd7475a.pdf?index=trueIn PDF document text
    • http://gemixeferakin.rf.gd/miracle_box_crack_2._93.pdfIn PDF document text
    • http://paravejurozekoj.epizy.com/wizas.pdfIn PDF document text
    • https://0f4267a5-27df-427f-b7ff-de3c6d4a4cd0.filesusr.com/ugd/9e4921_e1651a48d4c845c5b7a6700ede3f1ec0.pdf?index=trueIn PDF document text
    • http://tufosugobevoni.rf.gd/blood_relation_aptitude_questions_and_answers.pdfIn PDF document text
    • http://vekoxoke.epizy.com/blank_academic_calendar_2018-_19.pdfIn PDF document text
    • http://lewizalejeso.rf.gd/56292790971.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/octopus_plural_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/32009545181.pdfIn PDF document text
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_f6229741981d46d4996033050d0a462f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/14946090632.pdfIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_8eda10ad3a414227af12f160ac903de2.pdf?index=trueIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_d921def4199743e49bab37e4e503ed94.pdf?index=trueIn PDF document text
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_3b0dbb0ebac342da8d4ec7f43b0a282a.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A4 1740 bytes
SHA-256: 1a42368403fb164c4d7ea529f6e9713fa90d795af19f844e69025e3ce4bc9c8c
font_01_sfnt_off0000dd46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD46 4988 bytes
SHA-256: b50a4fb6f159ee6084b36136065307f9a3aea90dd66c4a831f94cce345e8f541
font_02_sfnt_off0000ee4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4D 10416 bytes
SHA-256: 4c187dcf8da6cbb42cba964bbd11b108b03de9231bb69f8dab56036640db72f7
font_03_sfnt_off000111fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111FB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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