Malicious PDF — malware analysis report

Static analysis result for SHA-256 012d24bc5b272344…

MALICIOUS

PDF

72.2 KB Created: 2020-12-23 02:23:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f8004d0d58250fd6216fe27f329b44de SHA-1: 9d65f0b727bd0a2dbd6bd4ba3e907199b6cbb2ae SHA-256: 012d24bc5b2723446c39898205cd8ff5c948d2f1dbbe2ab9c2d72d6fc69aee6f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a URL that is flagged as malicious by ClamAV and ML classifiers, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'Payzapp latest apk', suggesting a lure for a potentially malicious application download. The presence of embedded URLs and the ML classification strongly support a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafficel.ru/aws?utm_term=payzapp+latest+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405895/normal_5f91f90b384d8.pdfIn PDF document text
    • https://zunenevalomedo.weebly.com/uploads/1/3/4/8/134855990/pazokakug-tetuz-pejixas-lifejizes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5fdb70193209a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377928/normal_5fcf4540ab648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420013/normal_5faeedb52d275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408476/normal_5fd7cf119302d.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://uploads.strikinglycdn.com/files/12cca0ec-acc2-447f-bcc1-4c678a39d4b7/english_grammar_in_use.pdf.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/baahubali_1_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/download_bstc_2019_answer_key_www._bstc2019._org.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1bb6eedf0748826297e4/1606228918622/algebra_2_book_1_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcede67d267866a519e8cb4/t/5fd14bbdf09ee25c6a946315/1607551934568/tony_hawk_pro_skater_1_2_mega_ramp.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/panasonic_nn-sn651b_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/hadestown_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/apc_1500_smart_ups_software.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/nfl_fantasy_espn_cheat_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05E 4460 bytes
SHA-256: 9f96182df0f2d2564d90393536894e595387563b81b00e0cf7313e0e122d5c21
font_01_sfnt_off0000df9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 11104 bytes
SHA-256: 4a28926e7890a13faa9b8b282939ef833916882a8b9f907c7e3834f4a10b8cd8
font_02_sfnt_off00010574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10574 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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