Malicious PDF — malware analysis report

Static analysis result for SHA-256 658905d17ff1b433…

MALICIOUS

PDF

73.2 KB Created: 2021-05-14 07:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9c9d6f7f41b70a0ae6258e0765c22261 SHA-1: 84ec4da616e13a49eb2b6b9efaeee431924fa717 SHA-256: 658905d17ff1b43339b4216905a73b0f030e925603b3d680e5a04a627f099939
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 0.9996

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=over+the+rainbow+chords+in+c PDF link annotation
    • https://sajipetifejej.weebly.com/uploads/1/3/4/8/134883768/9024434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404966/normal_606ce9abbc45d.pdfIn PDF document text
    • https://wujabadatudipox.weebly.com/uploads/1/3/5/4/135400083/1842525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489979/normal_603fdde95425c.pdfIn PDF document text
    • https://popoxalisasuper.weebly.com/uploads/1/3/0/7/130775362/2967427.pdfIn PDF document text
    • https://punelita.weebly.com/uploads/1/3/4/6/134679726/8617290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411717/normal_6048e34652acb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/933efcd0-3bcb-4402-a8ca-1ce876240d42/ramatepuxujadolojuxiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b7a391a-a843-430c-8c73-4faf4e4f42b4/what_is_the_meaning_of_prepaid_expenses_in_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/22321401172.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/resume_template_for_fresh_graduate_without_experience.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/how_to_insert_audio_track_in_garageband.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/83454305307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f89c79-8df7-4fa1-a63d-7624708e3489/graco_swing_parts_accessories.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/logo_merchandise_no_minimum.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/62473521154.pdfIn PDF document text
    • http://zaxukesaludu.epizy.com/cas_lp-1000_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9d6c30-a25c-4fe6-91f5-c3c0a9733009/adobe_premiere_pro_cc_2019_beginner_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/html_and_css_templates_with_source_code_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/new_sequels_2020.pdfIn PDF document text
    • http://sidunutisa.epizy.com/lepunawij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9884b446-373b-42f3-adb5-ffa24ca7fe35/whats_the_difference_between_effective_and_efficient_communication.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_off0000e069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE069 5312 bytes
SHA-256: d2de1fb46e5683cf2d85d6e292d237b716af07f8c5441983519ae64bb92b6774
font_01_sfnt_off0000f27f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27F 10836 bytes
SHA-256: 70050f819336259c8e9efee66f0f49db285703dfba9045d3844bc36dba95588e

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