Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e12439bf1257e11…

MALICIOUS

PDF

79.6 KB Created: 2020-12-24 02:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 068795862df7805170f6f9b5c1334ccd SHA-1: 7464de59b2271a37b11479dddc9b9dbc8db38ee9 SHA-256: 2e12439bf1257e11349827452596a95b05665badca19d28ad3c41ce67a56cd30
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, suggests a lure related to educational materials.

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://traffnew.ru/123?utm_term=chapter+resource+masters+for+glencoe+algebra+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443292/normal_5fd3278e1e123.pdfIn PDF document text
    • https://cdn.sqhk.co/xakawituk/RYAHCNo/nugefizu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491725/normal_5fe3d6da03ae9.pdfIn PDF document text
    • https://cdn.sqhk.co/pujunuzivas/4ycUpjb/68190810620.pdfIn PDF document text
    • https://cdn.sqhk.co/tuponapalab/DgegfHC/tosotidelor.pdfIn PDF document text
    • https://cdn.sqhk.co/fakobijo/C5kTggF/residual_definition_psychology.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/reported_speech_commands_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e2b4ae8-e3af-46fe-9036-39db90257da1/nc_juvenile_justice_facilities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7266584a-62de-4f44-9be5-1ff9528d8528/pajikuduxadiganoxifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e408ee1a-89cb-44e9-be16-1023ddd08ec3/visual_analogy_guide_to_human_anatomy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35a80fb9-21f8-4ad0-8e48-183d1af2297c/podafikek.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/vunezufigise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a7ca65a-3ff7-498f-9532-48caf794b9fa/how_to_enable_bitlocker_tpmpin_after_encryption_hard_drive.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000e67b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE67B 14112 bytes
SHA-256: 8f6e98d70780c5c314e5be423c44aa259436eabde521555d6492b1993567d6a3
font_00_sfnt_off0000d3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A3 5604 bytes
SHA-256: f7dfaac767ac04f0fa27fb8bcc99288009b9e1b4659c78d9ef8462fa8edb341d
font_02_sfnt_off00010df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF8 10312 bytes
SHA-256: 908f685ac9ce6e218895538f815b77e03d34d823853eb1c06303623e2221f641

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