Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6045b9dce02cbb…

MALICIOUS

PDF

136.6 KB Created: 2021-02-27 06:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d59bdcfa9b8574ac29708ede8ac4828e SHA-1: 2a4f26f6b7e20a9499d5f2a976abe89ff162a8f9 SHA-256: fe6045b9dce02cbb50a5ff3de5d65c6b40a822df4038b24f53014dcb0ffc4c93
156 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, many of which point to unknown domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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=que+significa+la+ley+de+moises+en+la+biblia PDF link annotation
    • http://wipunemobak.mygamesonline.org/xerox_wc_7845_i_specs.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/89871460751.pdfIn PDF document text
    • https://tabureribe.weebly.com/uploads/1/3/0/8/130813037/robikujixinuwedomoxe.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/ead9a5c214ece0.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/list_of_american_army_ranks_in_order.pdfIn PDF document text
    • http://penimira.iblogger.org/quotation_word_document_template.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/resistance_bands_workout_for_back_fat.pdfIn PDF document text
    • https://pagopolekabob.weebly.com/uploads/1/3/4/3/134305888/efdd35173839328.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/dusined/refractory_heart_failure_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/template_website_responsive_bootstrap.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/rudram_namakam_chamakam_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/cage_the_elephant_album_zip.pdfIn PDF document text
    • http://xipanizi.myartsonline.com/what_is_seth_gold_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/51661827981.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/aktiebolaget_skf_annual_report.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C27 7296 bytes
SHA-256: 7ce8887536ed8ef23c73d3525caa1e7a3266f1b9d909108222b6c77edcd4778d
font_01_sfnt_off0001aec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AEC5 5548 bytes
SHA-256: 34064dcc87e3c8005d2aedecba1f5d739e5004a45d31f6ef36837d7a4a7f91b4
font_02_sfnt_off0001c1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C1A4 17764 bytes
SHA-256: 0501411670dd2739d7ec36e1bc3ebd0d191034c835c3e3bb04c8e82dd175b912
font_03_sfnt_off0001f7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F7F0 17620 bytes
SHA-256: 612eb00aca32584b62794efa99333be6661c7fcb5fb1d9b1453412abadf82a83

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