Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af765e314403908…

MALICIOUS

PDF

72.6 KB Created: 2021-05-24 06:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d7add9d100201bc20f26d4edffe319ce SHA-1: 56d3277ea52e2caa2819c4a994beb08ce16497ea SHA-256: 0af765e314403908ad1b6b254b992c2b86eb6c8ace04958e807ab999de14ae36
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/strik?utm_term=past+simple+regular+verbs+exercises+negative PDF link annotation
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/molelejobavamefokos.pdfIn PDF document text
    • https://mavibogixuridez.weebly.com/uploads/1/3/4/6/134635512/jiketulamubaso.pdfIn PDF document text
    • https://wixefonimav.weebly.com/uploads/1/3/1/4/131437632/wuxotuwanulamemoxok.pdfIn PDF document text
    • https://ziduxaxeg.weebly.com/uploads/1/3/1/3/131380546/dovizojelenufavel.pdfIn PDF document text
    • https://bigimenuxorotel.weebly.com/uploads/1/3/4/6/134655509/vosawep-jimanifomo.pdfIn PDF document text
    • https://kotafogora.weebly.com/uploads/1/3/4/3/134322717/murol-wolelozajemox-tiwafalijazugi-nusuzejaruj.pdfIn PDF document text
    • https://favobilumosuxo.weebly.com/uploads/1/3/4/7/134733594/4169984.pdfIn PDF document text
    • https://tozafutesaf.weebly.com/uploads/1/3/4/9/134900259/gogexebanenu.pdfIn PDF document text
    • https://zuzumesagodufen.weebly.com/uploads/1/3/2/6/132695194/vizunagoji.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/rikolesafuwofar/gefatizaxurotetedox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c38890b-1950-472c-9062-a6d70fbb8860/nukuxatabototirugeb.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/wetawinen.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/85821546071.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/petulakogigiraku.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/navodaya_vidyalaya_admission_form_11th_class_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/43486236047.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/what_is_rawls_theory_of_justice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e732bd20-507a-453f-8d96-9c7422e78065/ralupakazeliz.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F3 5520 bytes
SHA-256: e1d5834d504b602984669dbb1b2433e910a6b14287c94e9a36ebf8168e260135
font_01_sfnt_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 15468 bytes
SHA-256: 9fb92d4214ad4bcf74336b845bf54626e068ede78c36eb5211f834f11f57ee8e

Open this report in the interactive analyzer, or submit your own file for analysis.