Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f67bcc56edf929…

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 22:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c4075005f65dc010eaed025ada57acd8 SHA-1: 38a7df4f0832bbd4d82bcbcdab26139250854798 SHA-256: 44f67bcc56edf9292615505ca7c23763f9f00555f3d4407ea4c8af4e4d95d3ad
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms it is a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to downloading a 'balanced scorecard pdf'. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick the user into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=balanced+scorecard+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393647/normal_5ff76e1db34a1.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/hjaniiN/79569329006.pdfIn PDF document text
    • http://abanca-electronica.com/faziwamackr8g.pdfIn PDF document text
    • http://newyearshop.site/fojomumenajezisew1kgzw.pdfIn PDF document text
    • https://cdn.sqhk.co/zegapoxasut/dgiCIig/smart_button_on_lg_remote_control.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412158/normal_5ff0817aabdc9.pdfIn PDF document text
    • https://cdn.sqhk.co/zanivuwiduvo/g2jimhe/t20_world_cup_2020_venue.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/Nwuethi/contract_killer_sniper_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391925/normal_5fe6968e13576.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/biiifgh/81892913452.pdfIn PDF document text
    • http://twirlini.com/bexijivevaxiperusesizie3jyf.pdfIn PDF document text
    • https://cdn.sqhk.co/rotazokufaj/hqhWhd5/nosunigajaminupuwelo.pdfIn PDF document text
    • https://cdn.sqhk.co/sesumaku/eWicmhd/pinball_machine_parts_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/dubeminap/g89leNA/61184586797.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2253ad8e-bd4c-4750-9aa0-a998ce866a2f/what_degree_do_you_need_to_be_a_veterinary_technologist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf284551-2be9-4d52-96ff-289d80c6f23f/what_lawn_mowers_are_made_in_the_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8593a37-e74f-430b-81f2-261853146089/why_does_zmodo_says_device_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfba834-99ed-4042-9a40-de902f3b7e8a/tilupovadulozizar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a4293fb-2542-43f4-99f1-3ff883a55259/troubleshooting_shark_professional_steam_mop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e05e8de-ad46-49e2-aa06-18c027146a8a/gixukadivibugijiredil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae78a7ad-28fe-4b41-b481-208b4149c1e4/what_is_a_bill_of_sale_for_a_mobile_home.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE00 4948 bytes
SHA-256: f0210122a268ca766464a829291196069a147dc5f38afadd5d8be8b5ace54a4b
font_01_sfnt_off0000fee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE3 11412 bytes
SHA-256: 9e90c2d6599b246e066e5d223b7af17bf5d9af35cff84e57804060d4311393e8
font_02_sfnt_off0001241e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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