Malicious PDF — malware analysis report

Static analysis result for SHA-256 8666694531259961…

MALICIOUS

PDF

93.6 KB Created: 2021-02-20 07:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: adcf627b4495c7e089dea7cd94585640 SHA-1: fe500d5e35e4f7e2defad0111a94d4ddb9903e6e SHA-256: 8666694531259961b485f9645025a0f0ffcd7aceaa77467ccb2f1ddbef470dab
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that the document is designed to direct users to harmful websites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the document's structure and link farm nature suggest a phishing or scam attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=best+equalizer+settings+for+astro+a20 In PDF document text
    • https://foziwumiwogesis.weebly.com/uploads/1/3/5/3/135321673/1096d8.pdfIn PDF document text
    • http://ruwaxidalemib.iblogger.org/convert_base64_to_blob_javascript.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_602ad324ee178.pdfIn PDF document text
    • https://jazelisis.weebly.com/uploads/1/3/4/8/134870131/1220757.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/fijgifY/gubagef.pdfIn PDF document text
    • https://pupebofedajawe.weebly.com/uploads/1/3/1/3/131383363/7664056.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/gctlwja/blue_book_used_cars_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/gituxogud/d9XRhdO/85974732095.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/9hgidt9/590601921.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/MRiezqx/stackers_medium_travel_jewellery_box_blush_pink.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
    • http://vukevigax.epizy.com/making_progress_report_card_comments.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/rokukilefira.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/54699921344.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/english_amharic_dictionary_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/pipetotes.pdfIn PDF document text
    • http://dalizavok.rf.gd/chevrolet_impala_2016_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/dermatology_network_solutions_provider_manual.pdfIn PDF document text
    • http://koxaxinum.epizy.com/basic_instinct_3_dual_audio_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/google_drive_apk_for_mac.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B78 5316 bytes
SHA-256: 1a3aac428407cbd73eb9534733d7d6f3a9fa5bc1781a537ae86c94ab78ce85ef
font_01_sfnt_off00011d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9A 11940 bytes
SHA-256: 5f4602474edeed84b294ed8854c21a9ff5c25dcb7abec51426a8eea47d26243e
font_02_sfnt_off0001456b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1456B 16164 bytes
SHA-256: 3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994
font_03_sfnt_off00015a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A64 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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