Malicious PDF — malware analysis report

Static analysis result for SHA-256 18b3dbe968207f2c…

MALICIOUS

PDF

202.7 KB Created: 2021-04-23 14:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd166edddc859c939e3a5704576fae50 SHA-1: 5201bfe0fee2317ac9d0f539ab7e15b8cd93f77f SHA-256: 18b3dbe968207f2c39f367238171946ea7a98f0252cad5ecac1fbc6bd4b6502c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers flagged this PDF as malicious, indicating a high probability of malicious intent. The document body, though partially corrupted, suggests a lure related to service costs, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://botokaw.ru/strik?utm_term=how+much+is+a+pool+cleaning
    • https://vezutubiwewo.weebly.com/uploads/1/3/4/5/134507618/355825b0512b2.pdf
    • https://cdn.sqhk.co/goworonol/hdgdhfb/virugemituze.pdf
    • http://godotobekof.scienceontheweb.net/bioavailability_of_drugs.pdf
    • http://jivusibofonefud.mygamesonline.org/nikolof.pdf
    • https://dawirusopu.weebly.com/uploads/1/3/2/3/132303146/zipas-repaliru.pdf
    • http://faruvob.iblogger.org/arma_3_zombies_game.pdf
    • https://xixefofitajeres.weebly.com/uploads/1/3/3/9/133999179/4525170.pdf
    • https://jafedemigizol.weebly.com/uploads/1/3/4/5/134588438/lukatitufupedin.pdf
    • https://cdn.sqhk.co/tidaxetosi/ihgf3ja/tudub.pdf
    • https://gutusalewizewuj.weebly.com/uploads/1/3/1/8/131871657/nedevepafeki.pdf
    • https://cdn.sqhk.co/wubunepan/rieiebp/27197040206.pdf
    • https://cdn.sqhk.co/ledodatefu/cU8Ziie/vector_addition_problems_with_solutions.pdf
    • http://bizifawidipegib.iblogger.org/divom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c2a711cc-ee40-4120-b669-101e37d6bdb2/7022061714.pdf
    • http://kasilabupa.epizy.com/a_thousand_splendid_suns_film_release_date.pdf
    • http://wodutedemozaw.epizy.com/banuxovigalezipejetefa.pdf
    • http://lelurofu.rf.gd/sample_nonprofit_bylaws.pdf
    • http://lanelebitomutes.epizy.com/newadadexuju.pdf
    • http://gefuxexo.epizy.com/baravovesat.pdf
    • http://jazarinagirijad.rf.gd/cefr_b1_test_namunalari.pdf
    • https://uploads.strikinglycdn.com/files/fcbbc8f9-d361-49ee-a7cc-bd7e8d020dee/the_secrets_of_the_immortal_nicholas_flamel_movie_release_date.pdf
    • https://uploads.strikinglycdn.com/files/26012941-e256-4452-966d-b04d25c7cc51/gexofumiwaxixosis.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_off0002de27.bin
32d79322d07c4f6ff93a7d4c0c71bc388e37d917be6d3213fcb9e5dac6800eac
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE27 5304 bytes
font_01_sfnt_off0002f024.bin
00338e6b600be1631def47fd3ecdefb98e8d17a9d9e4185417966ab5b59906cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F024 13964 bytes