Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac67e98a007e8f14…

MALICIOUS

PDF

78.9 KB Created: 2021-04-03 07:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ca7abc7afca492a45e96bc5305ef3f1 SHA-1: 2e6299635f52f647cd069c8ed27e73c6e7a97c91 SHA-256: ac67e98a007e8f14b4b4b4f841e74252bac4402aa4fcb614d29d5f9dfc6c8c38
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with a critical heuristic identifying a link farm pointing to 30 external PDFs, suggesting an attempt to distribute further malicious content or engage in SEO abuse. One of the primary URLs, 'https://mezovuduw.ru/wix?keyword=ffv+blue+magic+guide', is likely the initial lure, while the PDF itself appears to be a wrapper for these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/wix?keyword=ffv+blue+magic+guide
    • https://polaposegit.weebly.com/uploads/1/3/4/5/134591324/4053662.pdf
    • http://konufij.22web.org/tabel_99_asmaul_husna_beserta_artinya.pdf
    • https://dowixedazu.weebly.com/uploads/1/3/1/4/131409709/ed4b3.pdf
    • https://lejonelawubuw.weebly.com/uploads/1/3/1/4/131453657/1185421.pdf
    • http://rolazipomi.22web.org/list_of_synonyms_and_antonyms_free_download.pdf
    • https://nubegajal.weebly.com/uploads/1/3/4/6/134668927/248208.pdf
    • https://tevomijirurefo.weebly.com/uploads/1/3/4/8/134846864/2479051.pdf
    • http://tigesaduru.iblogger.org/minowusalajovid.pdf
    • http://runivofo.iblogger.org/bejojamaxisurotuji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zopenave/buxafufemomisazexemasure.pdf
    • https://s3.amazonaws.com/jazuravazaguz/zomolujajuguralitamununo.pdf
    • https://uploads.strikinglycdn.com/files/dc6d8cc3-f468-411c-bb3a-b6e87bae6d57/how_do_you_draw_realistic_eyes.pdf
    • https://uploads.strikinglycdn.com/files/a58e28f4-8fb8-4afa-a323-db809e2a7b18/57314498202.pdf
    • http://zikofizoredu.rf.gd/jopozomuwoxobotazinat.pdf
    • https://s3.amazonaws.com/bepukuba/nesco_food_dehydrator_and_jerky_maker_fd-80.pdf
    • https://uploads.strikinglycdn.com/files/cb13f786-56dc-4a28-b276-a2db02473bc7/64378228966.pdf
    • https://uploads.strikinglycdn.com/files/eb49f95b-ab47-47e3-ac36-2ea219bfefd1/95516224376.pdf
    • https://s3.amazonaws.com/wexukufedepim/the_crown_cast_season_4_prince_charles.pdf
    • https://uploads.strikinglycdn.com/files/a613193c-1a23-4c50-b856-fb444f620455/rawuvigifepugujepagu.pdf
    • https://uploads.strikinglycdn.com/files/398a153a-0c35-451a-889b-c298ec0ab65c/ladokapibatiz.pdf
    • http://dolifusekaxug.epizy.com/god_strategy_binary_options.pdf
    • http://zifasodokid.epizy.com/tanzania_visa_online_form.pdf
    • http://xewenofos.epizy.com/71611140702.pdf
    • https://uploads.strikinglycdn.com/files/8f140910-e43c-4546-b8dd-172caa04c253/xotadadesibabuvivikitesa.pdf
    • https://s3.amazonaws.com/dosalapasenow/piriform_ccleaner_portable_windows_10.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_off0000f94c.bin
b6a29ae59c79bdbf6637b11c17872726dcf7effbf651a00032a80b8208afee1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 5220 bytes
font_01_sfnt_off00010b0d.bin
6a57c0a3b7b9108abca08d4a7c46a4bd6411ac83b784271727a86fb3f8a156f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0D 10456 bytes

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