Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94484cd69b10ce9…

MALICIOUS

PDF

73.8 KB Created: 2021-03-11 05:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a1e3dee6fefbc9d9ac106cccbd3c449 SHA-1: 156c7a37426ef2e9020dfe112ceaa4f1356cf1f4 SHA-256: e94484cd69b10ce9e48b0d734ed6b4b8df89e8512859c99fb64757ccea69a1ea
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs users to a website disguised as quiz answers. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://jacksth.ru/wix?keyword=chapter+12+quiz+1+geometry+form+g+answers
    • http://pevazaw.mypressonline.com/how_to_install_magic_heat_reclaimer.pdf
    • http://ravigimojamel.mypressonline.com/powudawixojudig.pdf
    • http://tufofol.medianewsonline.com/86797535858.pdf
    • http://lojapidabud.mypressonline.com/something_just_like_this_lyrics_coldplay_chainsmokers.pdf
    • http://xufelaketodo.getenjoyment.net/how_old_is_my_ruud_gas_water_heater.pdf
    • http://goxelaxonudex.22web.org/vicks_mini_filter_free_cool_mist_humidifier_reviews.pdf
    • http://vuvulusigi.scienceontheweb.net/train_ticket_by_pnr_number.pdf
    • http://rewetuxavix.mypressonline.com/23914740031.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccb19975-1ac2-4a32-97e8-a2501034a46b/60464925211.pdf
    • https://s3.amazonaws.com/wujodibu/73077913889.pdf
    • https://s3.amazonaws.com/jotogorurekuro/xevuduzinosefufevaleme.pdf
    • https://uploads.strikinglycdn.com/files/1a41ca41-e36e-4de5-b3bc-65443f61d6fc/motorola_ham_radios_for_sale.pdf
    • https://s3.amazonaws.com/xifabilejilab/dmvpn_cisco_configuration_guide.pdf
    • http://tabolamekosedu.epizy.com/calendario_2020_colombia_con_festivos.pdf
    • http://vawirir.atwebpages.com/kijamewuvewoberorajesarap.pdf
    • https://s3.amazonaws.com/juwofuxufijup/44778858015.pdf
    • https://s3.amazonaws.com/divexikav/accf_aha_guideline_heart_failure.pdf
    • https://uploads.strikinglycdn.com/files/63bc8554-5581-4286-9e14-4e8fbf432f51/sakazazo.pdf
    • https://s3.amazonaws.com/gurafoga/charlie_and_the_chocolate_factory_musical_melbourne_merchandise.pdf
    • https://uploads.strikinglycdn.com/files/784d4b1f-88f3-448f-a323-da314e10e8f2/pewerijiriwogiw.pdf
    • https://s3.amazonaws.com/betefowubevat/movie_counter_english_movie.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_off0000e16d.bin
e93fab7a16ceb8581a828bdb283f65a64c3735d976569cbfa6b2f5dd65e9c5f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE16D 5740 bytes
font_01_sfnt_off0000f4f8.bin
89dab3f04be730d41545a89690235bea78982dab8aeabc539a49885f297a0942
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F8 10812 bytes