Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d09938c376516b…

MALICIOUS

PDF

75.2 KB Created: 2021-03-19 06:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7dd534c355783bea2df6adda1aa3a3f9 SHA-1: bec59897170bd2132a0e95227f5b256022370009 SHA-256: 30d09938c376516b0bb99b22452954e653768dae22c1153bcb3e4edf40e2ea7d
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious content. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to 'Beowulf crossword 1 answer key', likely intended to trick users into clicking the malicious links.

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 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://mezovuduw.ru/wix?keyword=beowulf+crossword+1+answer+key PDF link annotation
    • http://zamividiwido.22web.org/sanixomi.pdfIn PDF document text
    • http://maporirunigis.22web.org/senamikarusidukofu.pdfIn PDF document text
    • http://nenonazuf.scienceontheweb.net/82500051316.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/manually_open_toro_sprinkler_valve.pdfIn PDF document text
    • http://mofirixubutibi.getenjoyment.net/84223207232.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/beatles_all_songs_chords.pdfIn PDF document text
    • http://womirewuzakuf.sportsontheweb.net/d_d_acquisitions_incorporated_book.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/adlerian_theory_key_concepts.pdfIn PDF document text
    • http://kidupat.getenjoyment.net/soxefofugifepedovipediro.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/40512758531.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/modal_auxiliary_verbs_chart.pdfIn PDF document text
    • http://suxiwef.22web.org/humility_by_andrew_murray_download.pdfIn PDF document text
    • http://jatudoz.getenjoyment.net/mivimokikaxupo.pdfIn PDF document text
    • http://josumewemuzob.getenjoyment.net/jasobebefan.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://uploads.strikinglycdn.com/files/e1807c73-371f-40bc-b136-48d80dc8fc6f/what_is_1_3rd_of_10000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1852834-12f8-4cd8-99a6-987a5d59af50/camp_chef_sportsman_pellet_grill_reviews.pdfIn PDF document text
    • http://bunokulenixa.epizy.com/voxasiwatet.pdfIn PDF document text
    • http://gogagenuju.rf.gd/weight_unit_conversion_table.pdfIn PDF document text
    • http://lemenoxubure.rf.gd/60376237382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05821ef8-6644-4c90-8f1d-ef14fa893f03/71819272934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d3330a5-f326-4425-878d-2abbb3d3a34c/52941606757.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_off0000dc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC05 5128 bytes
SHA-256: 44a647724bbf4e1ce854ca8c752e3de4dc20cbf1f772400d9bc111983fcd9eea
font_01_sfnt_off0000eda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 10436 bytes
SHA-256: 422a08486ce234f3ad30191515c8e340a4e007d9d872eed47bf5108e211e3ff7
font_02_sfnt_off00011167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11167 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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