Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01a29b28f91a68a…

MALICIOUS

PDF

90.9 KB Created: 2021-05-13 04:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e2d0210108604e4a82eb562f0a2ee1a SHA-1: dbac7c790ad656e49618678608ded36e2c8fac24 SHA-256: b01a29b28f91a68aa831814bf852036b1a132066de0a7ace604b613fa7daa57c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary suspicious URL pointing to a domain known for hosting malicious content. The document body, though heavily obfuscated, appears to reference a 'trail camera', suggesting a lure to disguise the malicious intent. The presence of multiple disposable domains and link farm heuristics further indicates a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/strik?utm_term=wildgame+innovations+mirage+18+lightsout+trail+camera
    • http://woxuruko.medianewsonline.com/is_the_canon_rebel_t3i_good_for_video.pdf
    • http://xerijegodufiw.mypressonline.com/55616395412.pdf
    • http://nedivebepize.iblogger.org/elementary_statistical_methods_in_psychology_and_education.pdf
    • http://gejokakop.mygamesonline.org/mthode_analytique_dfinition.pdf
    • http://guzoseta.getenjoyment.net/fairy_tales_short_stories_in_english.pdf
    • http://futajef.medianewsonline.com/humminbird_fish_finders.pdf
    • http://woxuruko.medianewsonline.com/elijah_of_buxton_short_summary.pdf
    • http://fidekeleko.medianewsonline.com/mera_bhola_hai_bhandari_lyrics_download.pdf
    • http://pezidibega.iblogger.org/katyusha_clarinet_sheet_music.pdf
    • http://jabisoj.22web.org/mcafee_antivirus_free_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nedijowewoded/southwest_airlines_rapid_rewards_program_information.pdf
    • http://tesapul.epizy.com/kodetivodurivu.pdf
    • http://rorazizaxaf.atwebpages.com/filipino_radio_broadcasting_script.pdf
    • https://uploads.strikinglycdn.com/files/35cb3912-76cf-4399-bff3-ba97f5d5d7e6/zokadubavegigarepan.pdf
    • http://mopiluganaloriz.epizy.com/jazafevivu.pdf
    • http://numorajigot.epizy.com/chapter_5_membrane_structure_and_function.pdf
    • https://uploads.strikinglycdn.com/files/7529b1ba-9e15-4c5e-9647-952ef07a497b/briggs_and_stratton_18hp_vanguard_engine_carburetor.pdf
    • https://s3.amazonaws.com/gavexilatuvitaz/ip_camera_recorder_software_free.pdf
    • https://uploads.strikinglycdn.com/files/3194bc30-d816-4360-9249-6b327276ce52/how_to_start_a_home_based_bakery_business.pdf
    • http://xawatutosewo.epizy.com/bambi_2_movie.pdf
    • http://fuxazulofonu.epizy.com/probleme_avertissement_utilisation_donnes_android.pdf
    • http://dukifubu.epizy.com/surviving_sepsis_2020_guidelines.pdf
    • https://uploads.strikinglycdn.com/files/12ee2535-265e-4451-b09c-dbad1ebec0b6/85375600217.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_off00012569.bin
24fc965b58607fc314ecfd394dfc5209f581c386fc7109d44e0341abcf299b68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12569 5672 bytes
font_01_sfnt_off000138a7.bin
e208523bd20e3df35fafd9708989d5696accdb3093f8374e2d3eb06335c5cc32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138A7 10988 bytes

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