Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e82842bd7af084e…

MALICIOUS

PDF

90.8 KB Created: 2021-04-01 06:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 42a226f8ffd6c17f360756e5abc881ad SHA-1: b7ab1a0b79fa40d1b06e4fa2ce221abe0a243bf2 SHA-256: 2e82842bd7af084e3ad51610fc7c9f3a3910a15d52612eb8addfc0e4a35178ad
96 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 ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. No scripts were extracted, but the presence of an external URI suggests an attempt to download or execute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/123?utm_term=linksys+wrt1900ac+user+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369930/normal_604b195801eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_60252868ccf0f.pdfIn PDF document text
    • https://mamafaxugelat.weebly.com/uploads/1/3/0/8/130813750/soterawof-jopapata-fiwok-mefoxuliki.pdfIn PDF document text
    • https://xaweregosakub.weebly.com/uploads/1/3/1/4/131407668/notizijuzof_wukitor.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/ankylosing_spondylitis_review_article.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482858/normal_5fda1b0c645d1.pdfIn PDF document text
    • https://xaxexuwolak.weebly.com/uploads/1/3/5/9/135978614/patiduv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_603814bfd36e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413987/normal_604ce946b2933.pdfIn PDF document text
    • http://pukoruserega.22web.org/self_evaluation_answers_examples.pdfIn PDF document text
    • https://doxazefeseremef.weebly.com/uploads/1/3/4/7/134764644/libuvunogakena.pdfIn PDF document text
    • https://mimevomakiket.weebly.com/uploads/1/3/4/6/134693464/kezilexewadebupuk.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/lazolu/bukixoruwarupum.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/57692817309.pdfIn PDF document text
    • http://fowasabitafal.epizy.com/breville_barista_coffee_machine_manual.pdfIn PDF document text
    • http://dawejur.atwebpages.com/classification_of_anti_tb_drugs.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/barbie_girl_wallpaper.pdfIn PDF document text
    • http://javasuk.epizy.com/50387453828.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/pamikegirajurike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fe49ad7-6161-4c5f-9a63-9d75b559d055/the_origin_of_the_work_of_art_martin_heidegger.pdfIn PDF document text
    • http://zosonigileg.rf.gd/80842516109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf21f99-e1c1-43a0-bf33-d4241c96ca01/23049131197.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_off000126a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126A3 5624 bytes
SHA-256: 253bd613331f372e669d6e2852266ab09d765df05009b0341544fb8810efbdad
font_01_sfnt_off000139f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139F6 10348 bytes
SHA-256: ee655fb76706180e265b5e75b2cad886bd461817ebf32a6e14f27ca5a3c436a7

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