Malicious PDF — malware analysis report

Static analysis result for SHA-256 7489e050b8fe5dd8…

MALICIOUS

PDF

77.1 KB Created: 2021-03-22 14:21:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a3b91c2b87fb76d8bb57a4799a5940dc SHA-1: 7e9a698ac81df4a69976bbb56528d702497f658a SHA-256: 7489e050b8fe5dd876678ab08c1823110bc3388eb840bb8dc0707d6d8298554b
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though corrupted, contains references to 'Adobe Premiere Pro' and 'free templates', likely a lure to entice users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/aws?utm_term=adobe+premiere+pro+2020+free+templates PDF link annotation
    • https://mepuralomelefaz.weebly.com/uploads/1/3/4/4/134494325/welelesusetasejofaj.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/441257fd66eec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402250/normal_6034ebfc1c058.pdfIn PDF document text
    • https://zudobusida.weebly.com/uploads/1/3/5/3/135330479/856903.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5fdff08684524.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392659/normal_5fe540fca30ea.pdfIn PDF document text
    • https://pazijovipa.weebly.com/uploads/1/3/4/3/134327002/patenapawufusi.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/96967373640.pdfIn PDF document text
    • http://bazubufawe.22web.org/20926828178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470698/normal_602776f7b4b85.pdfIn PDF document text
    • http://bisituz.sportsontheweb.net/american_slang_expressions.pdfIn PDF document text
    • https://ribavazo.weebly.com/uploads/1/3/5/3/135322422/buwivizuxaxo.pdfIn PDF document text
    • https://xugimitedekilim.weebly.com/uploads/1/3/1/4/131482884/gesologodo-woxipimopope-dedatizapi-punarolax.pdfIn PDF document text
    • https://zinivopupo.weebly.com/uploads/1/3/4/3/134386920/e75e33376b.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/48892410652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454436/normal_6004584b75b85.pdfIn PDF document text
    • http://lovelatu.iblogger.org/83024767700.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/rewepalazamiso/rewibuzalovefarodinasu.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/we_are_the_reason_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/bosch_tassimo_manual_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/voperabexevofip.pdfIn PDF document text
    • http://sivonimowonaze.rf.gd/20462899911.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/essentials_of_statistics_for_the_behavioral_sciences_10th_edition.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_off0000f03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03B 5588 bytes
SHA-256: e2099c2a8cf034386200ce9bce73885e2f8ac98abd28aab7a9097c0a205a9e0f
font_01_sfnt_off0001031d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031D 10500 bytes
SHA-256: c931d1ace74574bbf4dd3f54c8df66f110c970ea055289cd21467fb09fe5fdac

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