Malicious PDF — malware analysis report

Static analysis result for SHA-256 5600cad933fdea28…

MALICIOUS

PDF

67.0 KB Created: 2021-02-25 03:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fb5ed74d1a1df01ba981975ad0015296 SHA-1: f8a22ae9b61558136eb22b97e3e17cf92909c34a SHA-256: 5600cad933fdea28a7f9c0c9eb990b2eaf309783b04942f73c32c86ac938fec6
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=the+monkey+king+3 In PDF document text
    • http://nafarami.medianewsonline.com/27524298149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_602488079d681.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/mibegatatupajenida.pdfIn PDF document text
    • http://xojosagefe.22web.org/23429585302.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425214/normal_5ffb3148eb49c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5fc885348714b.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/vuridokufesefamalu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5fe5d60ad3833.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dakebesuvum/lutogajadodetalusovu.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/what_is_lean_toyota_production_system.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/censor_beep_sound_effect.pdfIn PDF document text
    • http://sewoxoxitif.rf.gd/najre_churane_lage_ho_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/432474928.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/cartoon_hd_latest_apk.pdfIn PDF document text
    • http://jizuvopanusin.rf.gd/godukomaladagewaxodi.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/lagu_surat_al_kahfi_muzammil_hasballah.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC059 4568 bytes
SHA-256: 4d765ed149bb1b2ca8c9ba11fdb094683ec987352de5fb425bf04e0123942364
font_01_sfnt_off0000cfc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC2 9836 bytes
SHA-256: 208e533be06897ec2f78e726e8d17c9806032d77b0bc5728230c08d6552f0ead
font_02_sfnt_off0000f14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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