Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aac5820877a14b5…

MALICIOUS

PDF

79.0 KB Created: 2021-03-25 21:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cdda8fb5ae6d0b46a25f283fead9f1bd SHA-1: 91c7f9e49adeb798929913cbafbc2b2cfce070c2 SHA-256: 6aac5820877a14b5f86236e5a12770a398c5c99cceef62f0b8436d5be14a162c
156 Risk Score

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://soxebez.ru/strik?utm_term=how+to+support+autistic+students PDF link annotation
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/3028319.pdfIn PDF document text
    • https://budawimimizav.weebly.com/uploads/1/3/0/8/130873912/fcd2c.pdfIn PDF document text
    • https://sajabewegapin.weebly.com/uploads/1/3/4/5/134592402/lawomoverokawovit.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/68611909147.pdfIn PDF document text
    • https://dijajogid.weebly.com/uploads/1/3/0/8/130874349/domaxatigiduribu.pdfIn PDF document text
    • https://migigagabigugam.weebly.com/uploads/1/3/0/7/130775968/madurejugawe-razosukeburo-lolaxalawab.pdfIn PDF document text
    • https://zifusiwi.weebly.com/uploads/1/3/4/6/134686012/gopusad.pdfIn PDF document text
    • http://vibemezanolex.mypressonline.com/lipadifinomaxotazubogakix.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/93b4934.pdfIn PDF document text
    • http://xolokeminapi.getenjoyment.net/blue_eyes_technology_free_download.pdfIn PDF document text
    • https://rumevupalod.weebly.com/uploads/1/3/0/7/130739773/vezuvelizolabog.pdfIn PDF document text
    • https://mibudixu.weebly.com/uploads/1/3/4/4/134490534/bejopaj.pdfIn PDF document text
    • http://zudepogumo.medianewsonline.com/23673965670.pdfIn PDF document text
    • http://mizarujil.mypressonline.com/rent_agreement_format_in_malayalam.pdfIn PDF document text
    • https://velonifiwivuli.weebly.com/uploads/1/3/0/7/130739758/712f8.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/timituvupame/fetebebojowevavaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/humayun_ahmed_books_josna_o_jononir_golpo.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/50432046600.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/elementary_surveying_15th_edition_reddit.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_off0000f7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B4 5088 bytes
SHA-256: 80ed958d232db2512b57c86aa6a19af9e2b74e5ecd8ad88f4b1e7889c2ffa3cd
font_01_sfnt_off0001091c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 11068 bytes
SHA-256: ad012d4ee485d6f421a12b8119a0310b2916011e35dadee2d7927d7e0188cf12

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