Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1f1c0a8ace364d…

MALICIOUS

PDF

88.6 KB Created: 2021-02-26 17:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9d06757b13630d370583ddb843052a96 SHA-1: 5450572fdb1a705df0d46a6ff2fa330e98629b73 SHA-256: 9e1f1c0a8ace364d7c0bd51134b519ca151986d385f73f3f4222eab77e0c166c
172 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically a phishing trojan. It impersonates Facebook to lure users with urgency, directing them to a redirector URL that ultimately leads to another PDF hosted on weebly.com. The presence of external URIs and the phishing lure strongly suggest an attempt to steal user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fuxopejebema.weebly.com/uploads/1/3/4/0/134018858/8b71f273fa.pdf.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/strik?utm_term=the+tapping+solution PDF link annotation
    • https://cdn.sqhk.co/nifijagik/Shhj6Py/endless_boss_fight_mod_apk.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/kirurasebag4tn4s.pdfIn PDF document text
    • https://fuxopejebema.weebly.com/uploads/1/3/4/0/134018858/8b71f273fa.pdfIn PDF document text
    • https://wudowured.weebly.com/uploads/1/3/0/8/130873715/xudujenisatapo-texidojef-navawajukibusew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5fde13ba271b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_601876499c0a3.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/iViaiji/gigabit_off_road_mod_apk_an1.pdfIn PDF document text
    • https://jeludumekidi.weebly.com/uploads/1/3/2/7/132740852/ea7912.pdfIn PDF document text
    • https://fumozowafujazuv.weebly.com/uploads/1/3/5/3/135331302/fibemizamada.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/ajdEggE/pozarenofanapuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_600c775567c4a.pdfIn PDF document text
    • https://gideturifit.weebly.com/uploads/1/3/4/8/134887905/libazexuwaga-dewelusatevupu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447431/normal_6008c9f8cfc0a.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/fopalew/pewegubuvoj.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/answer_sheet_template_1-_50_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/tunewesukuxumedofatuvagud.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/58172951040.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE85 6588 bytes
SHA-256: 4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
font_01_sfnt_off0000fefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFE 4936 bytes
SHA-256: a982fd10d029b8475501249fc53f00f6edb373e3176eee95a9c26f759d5f4851
font_02_sfnt_off00010fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC3 2744 bytes
SHA-256: d2f329577efb19f3fa32850ec3baefd28493180a1eec3341f40de35395f7e5f5
font_03_sfnt_off00011b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6E 10120 bytes
SHA-256: 7d16e9246e7f452787515b40ca7d6c42edd3f4c41eba169c95eccd75e9fcd023
font_04_sfnt_off00013e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E72 16296 bytes
SHA-256: f18bbeb39ce0ec1069eeb9033ef9d17f1cf20ced6faa2b20464ee46a840cf745