Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e38e8c06c0cf5af…

MALICIOUS

PDF

77.1 KB Created: 2021-03-24 21:06:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1a3097dfa083399bc3550c4a9ffde12 SHA-1: 66d01410db150aac3705e754e4d52ecf9a7ca378 SHA-256: 9e38e8c06c0cf5afd9dcf5a315bd70c83126e393a4062e8496abf03162901863
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=food+dehydrator+ground+beef+jerky+recipe
    • https://cdn.sqhk.co/vaxarogajib/Khgx39B/79422267899.pdf
    • http://saxobupazes.sportsontheweb.net/adobe_premiere_pro_2021_system_requirements.pdf
    • https://static.s123-cdn-static.com/uploads/4476140/normal_5ff03d57b7f68.pdf
    • http://mudikovarew.mygamesonline.org/que_significa_cizaa_en_la_biblia.pdf
    • http://dakolozen.22web.org/hmc5883l_compass_datasheet.pdf
    • https://cdn-cms.f-static.net/uploads/4416316/normal_600fe3e7a5310.pdf
    • https://cdn.sqhk.co/remimidotomi/ijigdWt/nostalgia_electrics_microwave_oven_in_aqua.pdf
    • https://cdn.sqhk.co/kakolutezegu/agjqSjd/13705776363.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://maxisoluxutur.epizy.com/manuvisemonali.pdf
    • http://rorujuzolu.epizy.com/10021556298.pdf
    • https://s3.amazonaws.com/sosupejuxofedo/holy_bible_esv_vs_niv.pdf
    • https://s3.amazonaws.com/lewuli/us_navy_seal_salary_2020.pdf
    • https://uploads.strikinglycdn.com/files/a55714d1-f476-48b4-8a85-97c0f8104131/when_you_reach_me_full_book_free.pdf
    • http://bavatesivo.myartsonline.com/circular_motion_practice_problems_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/365ae8dd-8216-4fa5-8d11-36d1f6cc97fa/whats_free_on_your_birthday_in_las_vegas.pdf
    • https://uploads.strikinglycdn.com/files/788ae111-99ee-455e-b11f-25e1dc2a0c31/dog_man_grime_and_punishment_book_summary.pdf
    • https://s3.amazonaws.com/moduxanakuri/critical_thinking_ppt_template.pdf
    • https://s3.amazonaws.com/guvovigo/7122989312.pdf
    • http://wevikokuzufos.epizy.com/cheesy_definition_informal.pdf
    • https://uploads.strikinglycdn.com/files/a1041799-a8c3-401c-9aab-5a1080256180/33200273108.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_off0000eeff.bin
485d91dad1c83b8a38ac07d4ea9b0190b790f0c06d1b1ebad41ddb471767e488
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFF 5544 bytes
font_01_sfnt_off000101ea.bin
ce8fd8a11cbec5173073e5c1718b0f0f4e5c8405ff41b245b45fead93d1c838a
pdf-font-stream PDF embedded font (sfnt) at offset 0x101EA 10848 bytes