Malicious PDF — malware analysis report

Static analysis result for SHA-256 9827ef77ef82e316…

MALICIOUS

PDF

86.1 KB Created: 2021-04-05 00:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05b827e2deef7a644cc64dac53b290dd SHA-1: 7b06105320496e67c77e5659c390fe7c5b7c56e4 SHA-256: 9827ef77ef82e3164f62051862c6759c6b1ab3d77cb1bc1486e05bb2ccf33608
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as an external URI pointing to a suspicious domain. Heuristics indicate the PDF functions as a link farm on disposable hosting, likely intended to redirect users to phishing or malicious content. ClamAV detection and ML classification strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://vilenefex.ru/123?utm_term=jason+vargas+mets+reporter
    • https://cdn.sqhk.co/pajokiman/gTgeid6/tamil_mp3_music_free_download_for_mobile.pdf
    • http://bijoxukorufu.iblogger.org/ledufesetikuba.pdf
    • http://razoxibawig.22web.org/msc_data_science_vs_msc_computer_science.pdf
    • https://cdn.sqhk.co/natefisaka/vjbMjdV/chocolate_mousse_cake_cooking_tree.pdf
    • https://cdn.sqhk.co/tinolefowi/jbH1anH/mine_survival_mod_menu.pdf
    • http://japamawosoj.mygamesonline.org/kasisatajuzeletobajakaga.pdf
    • http://nokiwurugibub.mypressonline.com/egyptian_arabic_english_dictionary.pdf
    • https://cdn.sqhk.co/xunijejozi/gMhcheM/75476696047.pdf
    • https://cdn.sqhk.co/sixitigoxeto/2hAGgdk/carrier_aire_acondicionado_manual.pdf
    • http://vexasefagi.scienceontheweb.net/where_is_the_drain_pump_filter_on_a_samsung_front_load_washer.pdf
    • http://xufelaketodo.getenjoyment.net/split_app_free.pdf
    • http://xorimomupajo.scienceontheweb.net/tujoginujixevabenawupafu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_e6300b6e97884b86aff685aa815d5c7a.pdf?index=true
    • http://xidalagep.myartsonline.com/iaaf_world_records.pdf
    • https://2521c3e2-5736-45bb-9381-71005f2ffa37.filesusr.com/ugd/c85705_393c19f31d034e9a95f009061759c66e.pdf?index=true
    • http://weguxuwe.epizy.com/what_is_introduction_body_and_conclusion_example.pdf
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_48aa034072df453a84489f3add0178e2.pdf?index=true
    • https://d64d5b41-a66a-4b78-b87f-0feaf8e9cf76.filesusr.com/ugd/cf1aed_f7087d471cab4079898c58a8d75d2a7a.pdf?index=true
    • http://nakepusigazu.epizy.com/how_to_empty_primo_water_drip_tray.pdf
    • http://tepominofujemo.atwebpages.com/kamba_ramayanam_ayodhya_kandam_in_tamil.pdf
    • https://8994dc82-3839-475c-8de5-8afaa5c13229.filesusr.com/ugd/798b5e_3ee6e4d9e65846e29ea66851e3feb423.pdf?index=true
    • http://besipopi.epizy.com/blackberry_z3_os_10._3._3.pdf
    • http://vunonam.atwebpages.com/duwijoda.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbe9.bin
8a0c59620d5c77ac5f6d81fe031f90f04ebdc4fdc237ee37aced17b342a4acce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE9 5156 bytes
font_01_sfnt_off00010d6b.bin
116b22935c901fd13cc8061abf3ec7ba1dff5b37f3eb6d58e2054cc08201a5b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6B 11576 bytes
font_02_sfnt_off00013501.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13501 16204 bytes

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