Malicious PDF — malware analysis report

Static analysis result for SHA-256 be28e6b05966b62b…

MALICIOUS

PDF

73.7 KB Created: 2021-03-04 00:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 74eab09fd524d81664057f9c1fa5490f SHA-1: d5c825207210d4a2c8b7263363ded7576f979794 SHA-256: be28e6b05966b62bb66f77deb9a4d410ea55684bee14b2cc8bdef403332d55c4
156 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. The PDF contains a large number of external links, many of which point to domains associated with link farms or potentially malicious content. The document body, though partially corrupted, suggests a lure related to a 'Daniel plan detox step 1', which is likely a pretext to drive traffic to these external sites. No scripts were extracted, but the PDF structure and numerous external links strongly suggest a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/award?keyword=daniel+plan+detox+step+1 PDF link annotation
    • https://xikigojajutu.weebly.com/uploads/1/3/4/3/134385057/4208515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454426/normal_601efda4e49a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_5fd7d9f5517b4.pdfIn PDF document text
    • http://kazaxukiga.getenjoyment.net/kojobogogajebetesinami.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476927/normal_5fe3f07e7948c.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/94514825999.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/jelonok.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/gafizimemitebabotax.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/mindhunter_john_douglas_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477638/normal_5ffda18e750b7.pdfIn PDF document text
    • https://jakineporop.weebly.com/uploads/1/3/5/3/135302356/nikudotalijex_jizaxuzeruwugul.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/pululusodogi/uc_browser_fast_apk_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/razer_abyssus_2014_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/wuninaxijen.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/51869695451.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/bowflex_ultimate_2_assembly_video.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/line_graph_jasper_reports.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/zekorapubigisirumatimonul.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/filmora_9._2._7._13_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/large_survival_island_seed_minecraft_pe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5ED 4976 bytes
SHA-256: 9872c912713b6ecee3539f804726c9bded68bf8c69f03527f1289b79351ca83b
font_01_sfnt_off0000f6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FD 10184 bytes
SHA-256: 7b6e7f9089ba905eaca786cfdad76ddd47f5aa57110e451003fb84e2fa53f562

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