Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e5ca85d3067190…

MALICIOUS

PDF

76.9 KB Created: 2021-06-09 21:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 706ef43a8df286db3317dc53f48617fa SHA-1: 7385e0d4911a26f1476ffffd61e5ed43955b0d15 SHA-256: 68e5ca85d3067190d9fe1798927c91bbc0fc2d86a00c1a35b11fdf6baeb9df91
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a site offering 'gta online apk obb'. This suggests a lure to download potentially malicious software. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, further supporting the malicious intent of directing users to external, potentially harmful, resources. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/pbw?utm_term=gta+online+apk+obb
    • https://ninurakabo.weebly.com/uploads/1/3/4/3/134324479/6477016.pdf
    • https://xutogimumunode.weebly.com/uploads/1/3/4/3/134375265/3d7b73196.pdf
    • https://xugomijomib.weebly.com/uploads/1/3/4/5/134578432/a6dd959015a0250.pdf
    • https://dapobatajixafaw.weebly.com/uploads/1/3/4/3/134310280/4247969.pdf
    • https://nowitapa.weebly.com/uploads/1/3/1/4/131438176/siziritijuremu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5a3a5b25-fce5-45c7-88b1-1c2ef2ce066b/xeduvide.pdf
    • http://favakiwosut.pbworks.com/f/free_fire_mod_apk_unlimited_diamonds_download_for_mobile_download.pdf
    • https://uploads.strikinglycdn.com/files/82b8467d-34b9-4778-98e3-faac21cb1fe3/ti-30x_iis_online_emulator.pdf
    • https://uploads.strikinglycdn.com/files/7b22416c-d052-4406-86fb-93fb8d3e715b/cessna_caravan_208_garmin_g1000_pilot_training_manual.pdf
    • http://sozevupegufi.pbworks.com/f/setidovurajabamebegap.pdf
    • https://uploads.strikinglycdn.com/files/233c24a6-3cb8-46a9-8857-353ea6323e38/fender_telecaster_neck_dimensions.pdf
    • http://niwomif.pbworks.com/w/file/fetch/144420999/naming_alkanes_alkenes_alkynes_worksheet_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/2c347fdc-cd46-424d-8a14-bd2ec66d3a60/how_do_i_pair_my_bose_remote_to_comcast.pdf
    • https://uploads.strikinglycdn.com/files/2cbde834-1357-4d2b-9733-32ab54f418ed/free_amharic_childrens_books.pdf
    • http://temopifevup.pbworks.com/f/class_1_marigold_book.pdf
    • http://xumamiz.pbworks.com/f/75160528419.pdf
    • https://uploads.strikinglycdn.com/files/fa58807a-93bc-4ba7-ab23-0fa1c5504684/jbl_xtreme_2_vs_charge_4_specs.pdf
    • http://kevuxezedila.pbworks.com/f/vomupa.pdf
    • http://wemilamozede.pbworks.com/w/file/fetch/144796926/26390360628.pdf
    • http://sikovifif.pbworks.com/f/how_to_add_webcam_overlay_to_streamlabs_obs.pdf
    • https://uploads.strikinglycdn.com/files/88309e38-518e-45a6-a1cc-05e6ed1d0221/96846230757.pdf
    • https://uploads.strikinglycdn.com/files/d2fbfb48-b7a4-4b20-aee0-0c51abd1d0a8/100_most_common_phrasal_verbs_list_with_meaning_and_examples.pdf
    • https://uploads.strikinglycdn.com/files/71a14c06-5894-4f0d-85be-a2b77e036607/84237937126.pdf
    • http://garigor.pbworks.com/w/file/fetch/144424092/gavonurejep.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_off0000ed8a.bin
66c8c765b77c65bf88710be47a0bec8aff7f4a11999774007bf2b12922885fdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8A 4772 bytes
font_01_sfnt_off0000fddb.bin
6fce37a921ec4b93b99c2ab4c440a5c429cac6c675ae1f988bc587d1ff75b7f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDB 12428 bytes

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