Malicious PDF — malware analysis report

Static analysis result for SHA-256 e611d771860bb1dc…

MALICIOUS

PDF

74.6 KB Created: 2021-03-28 06:43:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d95a6f178423a92f6f328b56954a9d76 SHA-1: 05c2748a427bdfa42518c035f096342c8a4d2e55 SHA-256: e611d771860bb1dc6e8b1daae6edd7aea5c9b46c38b7976e295f246d28bc1de4
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/123?utm_term=ashampoo+photo+optimizer+3 PDF link annotation
    • https://nefarixuk.weebly.com/uploads/1/3/1/4/131407944/17465f8b4963f.pdfIn PDF document text
    • http://freefire-gifts.com/owls_nest_esplanade_by_night_shift_brewing_boston_mau01af.pdfIn PDF document text
    • https://pojalurerisufi.weebly.com/uploads/1/3/4/1/134109142/e655fed0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379217/normal_5fec8e077de91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495034/normal_6045e61695af2.pdfIn PDF document text
    • https://nufapapezo.weebly.com/uploads/1/3/0/9/130969462/gomiwu_ligobidobaxedex_norovuvajunopo.pdfIn PDF document text
    • http://thecet.xyz/26365226501pxm7a.pdfIn PDF document text
    • https://rowisinudusa.weebly.com/uploads/1/3/5/3/135310113/8277570.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370764/normal_6002d6b481535.pdfIn PDF document text
    • http://onlineeshop24.xyz/vunuralovovi6nna4.pdfIn PDF document text
    • https://zoxavemawoba.weebly.com/uploads/1/3/4/7/134728713/eb284847.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459788/normal_5fe94e8d601f1.pdfIn PDF document text
    • http://magnifioco.site/38681717570c8nny.pdfIn PDF document text
    • https://durajonuz.weebly.com/uploads/1/3/1/3/131383269/1e33b32.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/xutomoxu/penisanezugigutikugo.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/57059692818.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/brassica_rapa_experiment_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/vitugofanana.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/eeo-_1_reporting_requirements_2017.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_off0000dd25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD25 5232 bytes
SHA-256: 9bdf396b5cef63e536d19724662fb8e8a5991f0985e6103121a0a2d321d4117d
font_01_sfnt_off0000eed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED2 20724 bytes
SHA-256: 888c4920c98a4ffc4d81e067aef04abd62e9af923fde8e522c007a784886e74b

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