Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63e85b2d917e5c9…

MALICIOUS

PDF

70.6 KB Created: 2020-12-10 10:09:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b7420ec224bd75865d79f67862e0e4d7 SHA-1: 998d260e89a73c53451e981eba87500ec2da53d0 SHA-256: e63e85b2d917e5c99a50fe87355765e571cc13697b8266310c4e9c8e09897a3d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier. It contains an embedded URL pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'starting guide'. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/aws?utm_term=one+hour+one+life+starting+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374024/normal_5fcb60d4dcc46.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/libemifag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fc270999a0a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5f8e09f145cb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375194/normal_5fc732db9f658.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f1725bcb0228a282b335/t/5fd1824f071bbc6880220e31/1607565905324/44391371987.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1beaab8467722f1da3b48/t/5fc610c808845d09245aa134/1606815951514/90609355635.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5933e8787e879898ba58f/t/5fc6b6e40791337046cb3e3e/1606858469157/6679377851.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/amazing_spider_man_2_apk_app_mirror.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa02f8c-5dde-4ccf-a334-8ecd4f971713/87060246435.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c77d44e997374a286791/t/5fcf7b8d68c18617d41392b1/1607433102189/my_airtel_recharge_app_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/altair_inspire_cast.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5533cd26ff1194f914669/t/5fc82da4e21c7c679ad9ebe7/1606954406239/mini_arcade_games_online_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe07eda97599144ebe9404/1606289390975/ramana_maharshi_telugu_books_free_download.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_off0000d472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD472 5196 bytes
SHA-256: b7ff77b32bd9be2b0a40eb81fd8778c969b1c5729be4670020ddcd759ddacaf2
font_01_sfnt_off0000e617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 12024 bytes
SHA-256: 189a165b876e016aa1d235139887f13451ae9dfa47fe940dfb105086f857da2f

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