Malicious PDF — malware analysis report

Static analysis result for SHA-256 a605d296b05900a8…

MALICIOUS

PDF

159.6 KB Created: 2021-01-20 07:50:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 90cf0d5e6ea6a1e77fe07fee2093900e SHA-1: e1b9901f283fa6091f7ced617090c04b48655530 SHA-256: a605d296b05900a87f8e107324cbee723471c3f2e4762ca3444c4a095e58fabc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URLs and the nature of the PDF content suggest it's designed to trick users into visiting a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://trafffe.ru/123?utm_term=2012+nissan+gtr+black+edition+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454544/normal_5fdc32c60fe9d.pdfIn PDF document text
    • http://takodevizol.iblogger.org/nozafunelixozewiv.pdfIn PDF document text
    • https://cdn.sqhk.co/vibifexode/ighi1gP/dopizobofaxaxewa.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/vax7heZ/79191349863.pdfIn PDF document text
    • http://wurulef.22web.org/persuasive_speech_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f92329d1cd65.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/iQdqjjD/68049425032.pdfIn PDF document text
    • http://vulefuxudonad.22web.org/nccn_melanoma_staging_guidelines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wopari/terjemahan_burdah.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/xodudaregawanofam.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/1694668735.pdfIn PDF document text
    • http://misukejijixuke.epizy.com/19446410199.pdfIn PDF document text
    • http://sesunofopum.epizy.com/template_keuangan_rumah_tangga.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/bowuvoger.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/cerebellar_arteriovenous_malformation_radiopaedia.pdfIn PDF document text
    • http://wedizakur.epizy.com/dm_vasudevan_biochemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/pawedemikib.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/wuwuzararirisoromufigor.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/boss_film_karo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E580 13944 bytes
SHA-256: 39dbe04cef983e60b413f34bd58e37ea9696cbfcb81452bb9c31b3d8f1a77469
font_01_sfnt_off00021227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21227 5464 bytes
SHA-256: ed65f620085a1e0cb48f975bfc874c634263bfce28c84aa4f25c9b63bfb99503
font_02_sfnt_off000224af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x224AF 11736 bytes
SHA-256: 2c1e9e82206d90202c7da90e5e5725f670f122e46b1543369269d8937a41ce43
font_03_sfnt_off00024ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24CA2 16060 bytes
SHA-256: 84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727
font_04_sfnt_off00026135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26135 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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