Malicious PDF — malware analysis report

Static analysis result for SHA-256 629ef472d451475d…

MALICIOUS

PDF

92.6 KB Created: 2021-04-24 07:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4825b078dec3a8974135b2c238f197f6 SHA-1: 5033fbd1cbcbcf916d4fd4066066f5a527331933 SHA-256: 629ef472d451475d1588f2a8610197bea1c7a28405941b4bf71e1220f6f76827
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 0.9997

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://jottigo.ru/strik?utm_term=what+defines+a+pagan+religion PDF link annotation
    • https://cdn.sqhk.co/rotazokufaj/hqhWhd5/nosunigajaminupuwelo.pdfIn PDF document text
    • https://lopamazaveseku.weebly.com/uploads/1/3/4/6/134643240/8948392.pdfIn PDF document text
    • http://bikokobolo.sportsontheweb.net/how_old_you_have_to_be_to_get_ssi.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/hihhgih/80501558484.pdfIn PDF document text
    • https://tulugawaluga.weebly.com/uploads/1/3/0/9/130969515/segibodinag.pdfIn PDF document text
    • https://jovigazever.weebly.com/uploads/1/3/1/6/131637362/4925742.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/QYTWCja/fovikop.pdfIn PDF document text
    • http://delinapod.mypressonline.com/88181989454.pdfIn PDF document text
    • https://vamalogobiw.weebly.com/uploads/1/3/4/6/134696595/tizezarasenak.pdfIn PDF document text
    • https://betataniboluwi.weebly.com/uploads/1/3/0/9/130969090/kedolukarozu.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/jqKighd/vakininunuzed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://198d5876-2e36-4a54-a59d-b4c1060b65be.filesusr.com/ugd/4733ca_b2ea49dbeff74c6dbc98d50ed7f1eab0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/921de34a-b391-4269-9a93-bf67dd5a8c77/vomufigawizikuxijisuzof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d0fe5b-a1be-4b6e-9156-66168a1cbcd0/ledabozejetuzegid.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/puvupibuzikelusaderif.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/98656941871.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/vinaziduxavatigemajus.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/phanteks_enthoo_luxe_tempered_glass_review.pdfIn PDF document text
    • https://ecf1b359-4982-44d9-836f-7e6f5fec4aa1.filesusr.com/ugd/da15c8_426f9821b0194486baf33571ce522af8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/roll20_character_sheet_print.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/emirates_cabin_crew_uniform_size.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_off00012ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE6 5316 bytes
SHA-256: 0470923ff9aacc7e6a44de6eefccc3d3f9ef9a86c73b93dfca135b563e675dbd
font_01_sfnt_off00014108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14108 10648 bytes
SHA-256: a358bde3e560969bf28f3ebf0a52431f6ba9f78ed4c255cdbc66edd6aaeb8e4a

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