Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed1c9515578fcc4…

MALICIOUS

PDF

79.8 KB Created: 2021-05-12 23:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 35748a35d213eb8e87cfaf4c66cd5915 SHA-1: 9a1071ecba98c94ddcadb8fb76bc80f536a769c4 SHA-256: aed1c9515578fcc48026235a9fe22447c220dd000775cf7159ec5c17e2f1bb29
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content, likely exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/strik?utm_term=badass+body+diet+workout PDF link annotation
    • http://jakesubinosol.scienceontheweb.net/3956520615.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzokikili/U3GLQcp/77008338250.pdfIn PDF document text
    • https://cdn.sqhk.co/bamebuxi/dlehdgd/dream_defenders_sunday_school.pdfIn PDF document text
    • https://cdn.sqhk.co/relaberof/hgjcdhd/bumper._io_mod_apk.pdfIn PDF document text
    • http://viwoxufegoger.sportsontheweb.net/adobe_sign_pack.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/beginners_reading_exercises.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/fatazikubibuliva.pdfIn PDF document text
    • https://gepadagonuvo.weebly.com/uploads/1/3/0/7/130775626/suwexifilidipaxelafa.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/cavities_of_the_body.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/zivamani.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/802125.pdfIn PDF document text
    • http://doucheop.xyz/binary_search_tree_insertion_and_deletion0qgag.pdfIn PDF document text
    • http://kononameve.mywebcommunity.org/chrome_extension_screenshot.pdfIn PDF document text
    • https://xovixonu.weebly.com/uploads/1/3/4/8/134896571/medejavu-kigomonori.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/5J6tdJm/best_photo_collage_maker_app_for_android.pdfIn PDF document text
    • http://trylait.club/22918185337ldedu.pdfIn PDF document text
    • http://chambrely.xyz/25160624993c56l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zofuratav.rf.gd/the_secret_garden_oxford_bookworms_download.pdfIn PDF document text
    • https://63209029-b609-4f89-80e5-af59b408cdb4.filesusr.com/ugd/0713e6_b6a64d39a1f34b8c9d606a5a3b6efe2c.pdf?index=trueIn PDF document text
    • http://vadivin.epizy.com/bidalarugizak.pdfIn PDF document text
    • http://wirowobizofox.epizy.com/how_to_use_a_barnett_jackal_crossbow.pdfIn PDF document text
    • https://bd04a250-715b-4db0-8087-55ec2f714cf5.filesusr.com/ugd/0c2191_515b95bd16c24a9e831d6b5839259ee4.pdf?index=trueIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_970d14eece774a9fa61dbc58d6c00d98.pdf?index=trueIn 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_off0000f87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87E 5236 bytes
SHA-256: 49638e29e3fe8450c07ed4408d7f49097a9e9563c297618daaed5c90eefbaa4e
font_01_sfnt_off00010a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6F 11140 bytes
SHA-256: ba214506c2437cf09395f872ab2db2a9f9aa759c0bab31602a8fd99ec406d627

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