Malicious PDF — malware analysis report

Static analysis result for SHA-256 0468ae67c984db09…

MALICIOUS

PDF

84.3 KB Created: 2021-03-05 04:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d86e742d32ecaac4346a3adc4fc9c885 SHA-1: d5e0e0ca3e9a3129813934582b44fd4239e0dc60 SHA-256: 0468ae67c984db098b3eccaa76aee74b72aa03909ef943a862ff2ff32630e692
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

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://jottigo.ru/strik?utm_term=common+english+words+with+hindi+meaning PDF link annotation
    • https://cdn.sqhk.co/wupofolizaj/jhfo1je/tmnt_rooftop_run_free_down.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hjKa2gc/rainbow_cupcakes_cake_mix.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hjbrgjn/5314025149.pdfIn PDF document text
    • http://xuzevofut.22web.org/jamelusuf.pdfIn PDF document text
    • https://cdn.sqhk.co/tazakabebilo/5BjEjaa/bubble_tea_open_late_melbourne.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://parezemutosulaz.rf.gd/todapebibizu.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/java_android_bitmap_to_byte_array.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/55395182815.pdfIn PDF document text
    • http://damewanobojojo.rf.gd/67570210124.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/77922281822.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_4ebfb8d022ae48eeb7c011a21fd6568c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bubeto/add_and_subtract_decimal_numbers_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b440e348-9532-46e7-9fde-e4dcf30c91c2/vuluwopewezekumowapomu.pdfIn PDF document text
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_c59049b56f664022a4c2da9400533ba8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3ca37a-ca98-4561-ada9-01ec9d372582/kajixewinoputabolowop.pdfIn PDF document text
    • http://zifawikixeliba.epizy.com/aua_guidelines_bladder_cancer_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f553e93-bea0-4351-8225-9aa0be6cdb3f/xunogixu.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/endnote_journal_abbreviation_list.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/how_flood_basalt_is_formed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4180d7d-9ceb-4f3b-bbaf-d89ba12232fe/hamlet_act_1_scene_2_soliloquy_significance.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/vinezemofilivuk.pdfIn PDF document text
    • http://totajenu.epizy.com/31384463592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6011b620-f1d5-48ae-8390-9074137f89f3/luzikululuvawetoj.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC7 5236 bytes
SHA-256: 22051bcf8b59971f0e3030d304a216348f24efc435b7c1648ee7195b4368d092
font_01_sfnt_off00010178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10178 10860 bytes
SHA-256: 6194db028c10ffaa295cb073a7c38d9fa6972275d18ead595f3117021d23b58d
font_02_sfnt_off00012677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12677 8868 bytes
SHA-256: 7a32c05fbc9b718e7f2e9190bf3c608bee52b70b08c0759399c10db2655a4781

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