Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af5546bbb57a110…

MALICIOUS

PDF

77.5 KB Created: 2021-02-22 20:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: db8ca874a4b843e82dd6614902dc9740 SHA-1: 241f816d861c8c2bf0d5dec727bc6ef073a4b4c8 SHA-256: 3af5546bbb57a1109701c0e2d73bfa4047bdab0ba967b1df2492c8d416c29420
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily corrupted, contains text related to a business name and application details, suggesting a lure. The presence of multiple external URLs further supports the phishing or malware distribution intent.

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://maypoin.ru/wix?keyword=charlie%2527s+italian+bistro+in+california PDF link annotation
    • http://vizimuvorogo.22web.org/lugepebidigudovowakudofa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464865/normal_6007a3b394394.pdfIn PDF document text
    • https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/lakabekalusawil.pdfIn PDF document text
    • http://my-favshopc.online/zudobuvabikowinorknxmx.pdfIn PDF document text
    • http://malespw.xyz/9_snf_fizik_1_nite_konu_anlatm_indirhn8b1.pdfIn PDF document text
    • http://morasufas.iblogger.org/2128489987.pdfIn PDF document text
    • https://wijedokimevu.weebly.com/uploads/1/3/4/6/134649091/a615e087ae35.pdfIn PDF document text
    • http://salebox.shop/ice_hockey_gamexz2tk.pdfIn PDF document text
    • https://dulodegusatoto.weebly.com/uploads/1/3/1/6/131636763/sezidixo.pdfIn PDF document text
    • https://zemapefim.weebly.com/uploads/1/3/4/4/134485651/aefaec660bf36.pdfIn PDF document text
    • http://wonitudigugejut.iblogger.org/bitamada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xomepixo/saxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/braden_risk_assessment_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/kevezetunuk.pdfIn PDF document text
    • http://suwetiwojiza.rf.gd/pneumonia_guidelines_pediatrics.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/alonzo_saclag.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_off0000f3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DE 5048 bytes
SHA-256: 12f5275a254c8dfbee623719a8bf8f678f17d02c08c99a7cea1136478677605e
font_01_sfnt_off00010505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10505 10500 bytes
SHA-256: ed8b08981735d716b875e03dc645fd4c90b916cbbe0bfe9dcd5e0191ef631fe4