Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c4a6f8d91c884e…

MALICIOUS

PDF

89.5 KB Created: 2021-03-18 22:32:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13275f225935e0df6b76ce8cd4702e5e SHA-1: 279f6085660218aa556bc3d4854514ba24ceb6e4 SHA-256: f4c4a6f8d91c884e33b3af46dffd1caa19c9b03a662bdbc8ea62fad354b1edcf
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that, when visited, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to 'love spells' reviews, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=do+love+spells+work+reviews
    • https://sererepe.weebly.com/uploads/1/3/3/9/133999843/jizuwun_gatidadiza_losaxijetexufe.pdf
    • https://cdn-cms.f-static.net/uploads/4482629/normal_5fd87820b1ec3.pdf
    • http://zagavexakagin.mypressonline.com/can_i_study_for_the_gmat_in_one_month.pdf
    • http://tezibif.mygamesonline.org/bodily_harm_margaret_atwood.pdf
    • https://cdn-cms.f-static.net/uploads/4450045/normal_6039f4a4e3a34.pdf
    • https://cdn-cms.f-static.net/uploads/4470553/normal_602ca5b9cdbb2.pdf
    • https://pazunorafozide.weebly.com/uploads/1/3/0/7/130776571/3774653.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://seroroxunabolu.onlinewebshop.net/95411837049.pdf
    • http://wiwilevo.epizy.com/les_adjectifs_liste.pdf
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_63a74aed9af94319b7531abc8f668687.pdf?index=true
    • http://nanixalo.rf.gd/gcse_inequalities_regions_questions_and_answers.pdf
    • http://rejeremonuwiz.rf.gd/sivojo.pdf
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_7f78412ca2134a16990ed25a775b9e20.pdf?index=true
    • http://bebegowudid.rf.gd/frosty_the_snowman_characters_wiki.pdf
    • http://voxinuxo.epizy.com/ameda_one_hand_manual_breast_pump_review.pdf
    • http://losuwanawore.epizy.com/63834349655.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f64.bin
eff4bf5c6e89f44534c0ce65b1acca1660f843e24ec271a5a2b0cc1715492b40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F64 4816 bytes
font_01_sfnt_off00012ff8.bin
9536f9b18ee9ce80aeac82bee0d8fcfef43cd67d88730a7dafab45bd5d78a5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF8 11740 bytes

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