Malicious PDF — malware analysis report

Static analysis result for SHA-256 0947373355623faf…

MALICIOUS

PDF

75.5 KB Created: 2021-05-21 13:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 94ff043517dbc1e337e5736387d936cf SHA-1: 49f47205f97fcf8c4ca31107be6aa57f1aa2511c SHA-256: 0947373355623fafef3f4964970ff27349a52e691ad1e98225d053e3c4707288
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a domain associated with phishing. The document body, though heavily obfuscated, suggests a lure related to a lease termination agreement template, consistent with a phishing attempt to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=free+mutual+lease+termination+agreement+template PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcc10e6-0736-45c6-aaff-e8bd7379328f/craftsman_200_mph_leaf_blower_electric.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/nabojusajarip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a77945-af75-4e3b-b0f3-748554fafe0b/cast_the_exorcist_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d88217f-fa97-400d-ba50-1bb97d262ffc/28253938467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309b9769-2b9b-437d-b876-43356a68e8d0/55606285336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c22342-b6b2-45e4-82f5-43ef7c838480/lubakanuvawogimurovit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee0ed79-c656-40b0-950d-4bf1692d6dd2/does_papa_johns_have_wheat_crust.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a15d266f-fea1-4e3c-a08d-b5b947a0ccad/jenusanurixivokupuguba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504cbc0f-9b04-49ae-9f3c-ed596206e35a/how_do_you_program_an_xfinity_remote_to_a_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc69e48-9b41-4bea-a943-53fe51ab9f2e/xozarelotoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af6085b8-c379-4219-b90e-5a2263c2f083/monster_in_law_movie_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3414ca9f-977f-48fa-b7e0-bc7e10eac612/prentice_hall_biology_miller_levine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ae266a-757f-4de1-b588-b6a0dcdb699d/79626338804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d709b600-00b8-4621-9e13-ccb46a15a2e2/92656593480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027bbfe0-c4e3-40d2-8589-d82e6ad9938d/xeguve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337b5390-a3c6-4293-93b8-ef714b58d5e6/rodutopemikan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c97cfa3c-acf3-4f98-8690-bb66ca73ff2c/wunavivibamaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2540898f-293c-4c75-9a3b-9f0c1dd1913b/death_note_movie_l_actor.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/73448933169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0cbe14-6ea3-4d27-af83-450059740931/wegugujijufatarekogeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5236b3a-1981-4663-a25b-de619075fa2b/boatswains_mate_dictionary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f54a7ce8-3af2-4768-91fe-102ae3e66fd0/how_to_unlock_lux_geo_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28cbbbff-ab03-4f9d-bf9b-eb55be4c6622/what_degree_is_needed_for_a_public_administration.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/android_os_all_versions_name.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA93 5092 bytes
SHA-256: 5419e5c6d8f9821297ca2b2cbec566e1cba37cc3fdb4ef0d9e4986491dd6b303
font_01_sfnt_off0000fbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCD 10756 bytes
SHA-256: 9273d7dfb9f93c090dc10c4eb81e84b868de8e3beb5927f56795e5c9921d7b48