Malicious PDF — malware analysis report

Static analysis result for SHA-256 6377bb0a69bbe132…

MALICIOUS

PDF

98.8 KB Created: 2021-04-14 05:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8ddf0cb67ba911059f13815e749e7a0b SHA-1: 24df28189c426f3032ea5c459345306dcb5f60ef SHA-256: 6377bb0a69bbe132c571529901f5d97328f3a6f230c714d04bad5df45ee24c60
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm or phishing lure. The document body, though heavily obfuscated, contains a title related to "anointing oil for personal use" which is likely a deceptive pretext to drive traffic to malicious or scam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=how+to+use+anointing+oil+for+personal+use PDF link annotation
    • https://cdn.sqhk.co/nonobepimaf/hfLigJW/funitelidexazor.pdfIn PDF document text
    • http://lupepujalin.iblogger.org/65125473001.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/hbgfVgf/39283872018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_ab245aba2d7f40a29183ce95ae07d144.pdf?index=trueIn PDF document text
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_a6618af08c5a44ea9667ab50e28b6984.pdf?index=trueIn PDF document text
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_803da08f088047a2bab9ef7b0ceb912c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/8542104217.pdfIn PDF document text
    • https://3c31dc6e-14a3-4e60-a373-897e90814001.filesusr.com/ugd/9e17d8_984b1394640043b689ddadfd4e5e0758.pdf?index=trueIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_c6c46fb7d7fc4bf68bfc9d44ba5c80d7.pdf?index=trueIn PDF document text
    • http://pidosowot.epizy.com/breville_juicer_manual.pdfIn PDF document text
    • http://maxezexisog.rf.gd/lepepixopajabul.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_0ceee8a36f9c43759cc403d0504714b0.pdf?index=trueIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_c0a003060ed54be4a6056fd73c67cd30.pdf?index=trueIn PDF document text
    • http://rogidisili.rf.gd/sogepaluxolixiwasufa.pdfIn PDF document text
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_f8332e065ccb44d99447e8709ee1267e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bifamomove/15665738853.pdfIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_3337f75b361546debfc71c3e91e7eeb8.pdf?index=trueIn PDF document text
    • https://42cc6f6d-9125-48bc-bce4-1bf15f49b1be.filesusr.com/ugd/7c30af_a964b86290454921a0279a56f056f29b.pdf?index=trueIn PDF document text
    • https://0bef8565-087b-457a-960c-b0529baba50c.filesusr.com/ugd/638000_15bbad6ca2cc441991284d5723558ca8.pdf?index=trueIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_7d4b2326ea53453e8d8895a8a3c6d91e.pdf?index=trueIn 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_off00013b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B86 5124 bytes
SHA-256: f283a28f6cf0e8fec36b4fb226d38fbfe7b149a5f53ad5824ca5b617acd479e1
font_01_sfnt_off00014d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D1B 15320 bytes
SHA-256: 14568ad5641af3965fbb89073c950ec689fd9311136f1ba6239c856c21223d6b