Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f2b93ead39a36a…

MALICIOUS

PDF

88.1 KB Created: 2021-03-09 02:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ca06b82f266038e5add8a7427cbf38a9 SHA-1: fe39c1a3ea3a112ce54fd935ead4c154f82c0f96 SHA-256: 30f2b93ead39a36a617b9c0f73fe3f1c2fdf78a1e7a823f0dd7c1aba7ffa5ad3
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=design+thinking+process+guide PDF link annotation
    • http://jiwabozaxexe.mypressonline.com/39593721603.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/eGhhghA/5186596581.pdfIn PDF document text
    • http://dixukegeruxu.22web.org/what_is_another_name_for_sensory_nerve.pdfIn PDF document text
    • http://fuwiduwoxobol.mygamesonline.org/13392646385.pdfIn PDF document text
    • http://kaloveximi.iblogger.org/tecsun_pl-660_antenna_jack.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/pTzhhha/5253611406.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/bookworm_adventures_3_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/greenhouse_effect_free.pdfIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_1b8bbd08ad1f4714aecc9f09e0e65bb7.pdf?index=trueIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_9bdabd9277ff400384b74522c8c883b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nakevoja/41861626862.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/schofield_and_sims_mental_arithmetic_answer_books.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/35643045104.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/95011254178.pdfIn PDF document text
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_34c600adef59498597d3c46228fa3726.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/outlook_macro_create_email_from_template.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/hansel_and_gretel_bakery_barnwell_sc.pdfIn PDF document text
    • http://jarexuvi.epizy.com/why_does_my_nail_gun_not_shooting_nails.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_ad1077d89b9b4070b65821dcce3fc554.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/63321251852.pdfIn PDF document text
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_96111aa1bcc44bbc8060e5e35dc06a18.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5B 5156 bytes
SHA-256: a32517f22ab1b3ceceb5aac6b6f7d45a3c7cd69a53ef61b3e295255b1494f634
font_01_sfnt_off00012eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EEC 10496 bytes
SHA-256: 87fbe96525f9c23c2655b6ba107741d1bb8c24a9ac2eb7b5a98f474a3a9ab402

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