Malicious PDF — malware analysis report

Static analysis result for SHA-256 97164f9ced16b639…

MALICIOUS

PDF

609.7 KB Created: 2021-04-23 10:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e740244f49a25c0783d78fdd53ddc435 SHA-1: ef475c2ac5927de2747ae9351eb119268f100a39 SHA-256: 97164f9ced16b639ebb813b0aa08cb70e13f2136b1fbadc3baa856736461902b
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an external URI and an SEO redirector link disguised as a free movie download, which is a common lure for phishing campaigns. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jumiwimov.ru/strik?utm_term=the+adventures+of+huckleberry+finn+movie+online+free PDF link annotation
    • http://motarojetox.sportsontheweb.net/27745597675.pdfIn PDF document text
    • http://pelubexeto.getenjoyment.net/mappa_ajaccio.pdfIn PDF document text
    • http://torixewiser.medianewsonline.com/63059690130.pdfIn PDF document text
    • http://xifasiv.getenjoyment.net/job_contract_agreement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495994/normal_5fd1f926e9f50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_60183bd4a3ae4.pdfIn PDF document text
    • http://wukebejajixajen.iblogger.org/72551174005.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botawaxugeb.epizy.com/xonanasepedobigetagajope.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/matlab_figure_subplot_legend.pdfIn PDF document text
    • http://gonatiw.rf.gd/how_to_size_a_football_helmet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e77af528-b27b-460e-87ab-8cff9d5fa944/80314285051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8671f35b-195a-4218-b89d-255b1e625b74/15110691931.pdfIn PDF document text
    • http://poxizaxo.epizy.com/cortisone_injections_spine_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/what_does_spanish_don_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/pokemon_nds_emulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/what_do_you_need_to_write_an_article.pdfIn PDF document text
    • http://belojegepi.epizy.com/93070359805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eed92d1-da8a-407e-a9ff-90e339ff9588/88029343279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22f5853c-2cdb-4854-98db-8c92b7919390/guwiwujigibeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b4d0a6-438b-4463-b131-44c33ba5aab6/how_many_calories_in_a_nacho_fries_box.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/48173360689.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_off00093972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93972 5576 bytes
SHA-256: e6414f2d2671794d2578e30c63a366de0e0d99124c982bd6b9e608ece31c5ef6
font_01_sfnt_off00094c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C58 11868 bytes
SHA-256: 85dc20801f282c08a7a5248e067f4bb0472431de75ff3273f678a016f700514e

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