Malicious PDF — malware analysis report

Static analysis result for SHA-256 208bd704d1ab3729…

MALICIOUS

PDF

70.0 KB Created: 2021-02-11 21:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ad1a302b9e0132092b5f18702ddd2066 SHA-1: 3328f4294749ea5390d5bb53ab8c6187cd8d54d1 SHA-256: 208bd704d1ab3729f4b30485b67c10c7e17ac1ada514af807a5dae68b7977a35
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm or SEO poisoning attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=energy+conversion+gizmo+answer+sheet PDF link annotation
    • http://juxefagag.22web.org/frog_dissection_lab_report_discussion.pdfIn PDF document text
    • https://zudamuberul.weebly.com/uploads/1/3/4/8/134854759/9042138.pdfIn PDF document text
    • http://mitefakosutupot.22web.org/personality_test_questions_with_results.pdfIn PDF document text
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/4733249.pdfIn PDF document text
    • http://rugozuravonabib.22web.org/gaguvopuwonuzem.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/3jiAyA5/relic_looter_mask_of_tomb.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/2gfihhe/youtube_name_generator_for_best_friends.pdfIn PDF document text
    • https://rurinigumiza.weebly.com/uploads/1/3/5/3/135350695/wejavater.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/moputifolaweremu.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/220125302879dn0a.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/jehOUid/gikulewabuxagovogor.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/tonisefoteka/roxatalamonarogasipal.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/bmw_m57_manual_gearbox.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/replacement_conservatory_roof_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/xidanatesegosavenexebi.pdfIn PDF document text
    • http://narivisifan.rf.gd/50008720183.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/block_b_her_album.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_off0000d35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35F 5440 bytes
SHA-256: 92bb7c26e68ce8ffde729f6149dff650c1bde9bbe0293573c904f026fe825590
font_01_sfnt_off0000e5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E2 11044 bytes
SHA-256: 196ed1a97c7e299c815d5bffc6bf568428c9c27e56473500bf6630187878e3ef

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