Malicious PDF — malware analysis report

Static analysis result for SHA-256 7edcd7d6382d3e79…

MALICIOUS

PDF

77.6 KB Created: 2021-03-20 00:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d61b2d0a2c30cc63df2e964daa515861 SHA-1: d49f409b9a6ed2e4f45357d4b12b6467a0d0d6fa SHA-256: 7edcd7d6382d3e793e7f40cbb603b7ffe71f7a4680dd408acb2b6483f3e5ef9d
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and phishing-related. It contains a large number of external links, many of which point to potentially malicious or SEO-farmed domains. The primary malicious URL identified is https://ponafet.ru/wix?keyword=clark+county+regional+standard+drawings, which is likely used to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=clark+county+regional+standard+drawings
    • https://cdn.sqhk.co/pijujuweg/egielVM/4415418039.pdf
    • https://cdn.sqhk.co/lumolixuwo/ijcT4df/field_navigator_app.pdf
    • http://kanaxade.mygamesonline.org/delegation_and_decentralization_of_authority.pdf
    • http://belepebo.mywebcommunity.org/business_line_newspaper_today.pdf
    • http://fafesixokegigi.getenjoyment.net/blender_2._5_materials_and_textures_cookbook.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tiwosutodegadax.onlinewebshop.net/82212636933.pdf
    • https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_299eccc18c2a4dbbb14b5bc1774e37c4.pdf?index=true
    • https://f61a8d15-835b-4c36-a3db-e4ead73ab13f.filesusr.com/ugd/e9f5f3_b0619b5184dd42f69c2718d35905a705.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7fa5da3f-b4fc-49d3-a598-2ec108b49e33/why_does_my_gopro_5_say_sd_card_error.pdf
    • https://s3.amazonaws.com/regovadeje/tipos_de_corrosion_en_estructuras_metalicas.pdf
    • https://s3.amazonaws.com/xomudufe/laperavomubefa.pdf
    • https://s3.amazonaws.com/padanivozeb/any_reported_cases_of_zika_in_cancun.pdf
    • https://s3.amazonaws.com/galinikagopit/what_are_the_different_types_of_printers_in_punjabi.pdf
    • https://s3.amazonaws.com/jumedemimo/eleanor_rigby_violin_duet_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/b49a49f3-c586-4198-9273-d475ee25e9d7/craftsman_14_inch_electric_chainsaw_blade.pdf
    • https://s3.amazonaws.com/sumesawoxajew/cloud_platform_as_a_service_examples.pdf
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_12108ff371334b179190925f08b32f7d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/766ba349-41fc-4745-b9d8-75f99b67f504/which_is_the_largest_economy_in_the_world.pdf
    • https://s3.amazonaws.com/padanivozeb/software_architecture_in_practice_len_bass.pdf
    • https://uploads.strikinglycdn.com/files/42d7443b-8d5f-44b6-b8cc-8f4ba58b9f76/is_the_game_of_life_free_on_ps4.pdf
    • https://uploads.strikinglycdn.com/files/3ace9cfa-3a1c-417f-83d4-437c88c5461e/18734300132.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20d.bin
c956204b5276d19383160e8f2b1e6506b6b00f89c211ebd6099e97a87dfbdcdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF20D 5268 bytes
font_01_sfnt_off0001041d.bin
272c30b24111cd7bbbebfcfb446f116d00600d732e0151e50014bf33d9334b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041D 10780 bytes

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