Malicious PDF — malware analysis report

Static analysis result for SHA-256 1094e0e2b999c1f8…

MALICIOUS

PDF

77.9 KB Created: 2021-04-22 20:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60c681ad9979d94e7a5a32a2227005f3 SHA-1: 7dfd21741956e486ce4de0f80f9d48527bdd1373 SHA-256: 1094e0e2b999c1f826a55f059c1f3828f41cc8a2b51c10ddfdeb0af0cc04f5fe
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by directing them to a malicious site.

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://resalured.ru/strik?utm_term=what+are+some+of+the+best+stories+in+the+bible
    • https://cdn.sqhk.co/retesixabe/halijih/radotevivo.pdf
    • https://cdn.sqhk.co/zajujinul/GEhi0Lr/mipejixar.pdf
    • http://xowanopumug.22web.org/fubiruwoxavepulosorurime.pdf
    • https://cdn.sqhk.co/batumozi/dxeheia/butajixad.pdf
    • https://cdn.sqhk.co/wesebewoweva/ibjcKhe/guess_the_song_game_alexa.pdf
    • https://cdn.sqhk.co/dudazume/hdzigii/12750401502.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://japefafe.epizy.com/affinity_photo_tutorial.pdf
    • http://woxenebifa.rf.gd/zoguxopamusadumezudura.pdf
    • http://gajutar.onlinewebshop.net/ronenegusoxudonox.pdf
    • http://vovodevugawas.epizy.com/vavewixisenuwepumopodeju.pdf
    • http://popedufi.epizy.com/89334229225.pdf
    • https://uploads.strikinglycdn.com/files/4cb0a7dd-278f-401e-b680-91fcbb3978d1/84632648174.pdf
    • https://uploads.strikinglycdn.com/files/85c95491-3a80-4f3d-8f6f-e66f4b5f704a/vajurifanugelewuwujut.pdf
    • http://jodafenokod.epizy.com/37015497694.pdf
    • http://gamotaganewo.epizy.com/ruzifiwab.pdf
    • https://uploads.strikinglycdn.com/files/89be588e-852a-4dd5-a79e-4197213ec55c/how_to_calculate_gravity_with_a_pendulum.pdf
    • https://uploads.strikinglycdn.com/files/889532a2-5cbe-4687-880e-8ef27f2cb90f/gre_math_subject_test_practice_problems.pdf
    • http://bopubedoru.myartsonline.com/vowetuseripovu.pdf
    • http://mepusafufeja.rf.gd/anteproyecto_de_investigacion.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_off0000f37a.bin
3355622e3b16c386dd5ff2a587753e38cc63c9baf70aa96ef82d49f711caa7aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF37A 5160 bytes
font_01_sfnt_off000104ea.bin
02b2fb4f9461c73fb80de7bd6ccb51a96bd1144c0eac0643d7ae34317e25dc8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x104EA 11324 bytes