Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e96fc0019ae9ca…

MALICIOUS

PDF

76.2 KB Created: 2021-04-06 02:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: caa9605cb1225e0a86116a27caac0afc SHA-1: 1d0facd5a268578a160821b316491e4eda142461 SHA-256: 03e96fc0019ae9ca9dd659932473ac1fbd54079cbede9828339808468efc2b10
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with the primary malicious URL being https://soxebez.ru/award?keyword=psychological+disorders+symptoms+and+treatments+pdf. The document body, though heavily corrupted, suggests a lure related to psychological disorders, likely to trick users into visiting the malicious link. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=psychological+disorders+symptoms+and+treatments+pdf PDF link annotation
    • http://lixuzixewufixib.66ghz.com/pogilekaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5fd8098b29eda.pdfIn PDF document text
    • http://rutetasilatigo.iblogger.org/ciencia_politica_definicion.pdfIn PDF document text
    • https://zimegusak.weebly.com/uploads/1/3/4/6/134605775/mibavexenirel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_6033722192030.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/dazazabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446272/normal_603160114a62c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_60436e7446956.pdfIn PDF document text
    • https://mawajajapok.weebly.com/uploads/1/3/4/3/134353668/5099511.pdfIn PDF document text
    • https://rimuloxizozo.weebly.com/uploads/1/3/4/5/134589703/7a030d43d097cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd0d3e7-215d-4cc1-8e07-8b1407bd5bf3/33295168531.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/buspirone_davis.pdfIn PDF document text
    • http://fudotebu.epizy.com/video_player_hd_terbaik_android.pdfIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_309763df09bd456e9162ccca138aed8a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/skyrim_do_alchemy_ingredients_respawn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992a04c3-ae52-4d4a-993c-88a1acebfb29/ley_de_propiedad_horizontal_en_venezuela_vigente.pdfIn PDF document text
    • http://wofuxax.rf.gd/48156748188.pdfIn PDF document text
    • https://058da8ce-bb30-4b8c-81eb-8903018cac65.filesusr.com/ugd/ab745b_28ce0487004d44d28e11ca906c879250.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb42d05d-c522-4048-9723-c9ce6f2b0efa/4_pics_1_word_answers_8_letters_red_carpet.pdfIn PDF document text
    • https://0e75ab8e-f6a1-4360-bef2-1d94e06fde4e.filesusr.com/ugd/c0518c_4353a5dfd5c04104a3a10f95dba0424d.pdf?index=trueIn PDF document text
    • https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_8100ac853a4340ebb01bb0382947ea42.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/7711090098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f515bf08-a24f-4da4-95aa-acc7ff263a81/area_and_perimeter_word_problems_worksheets_6th_grade.pdfIn PDF document text
    • http://piluwut.epizy.com/ziviwufakawufukov.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/lixarewabumeguvuxufem.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/mirelumenidobu.pdfIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_0837c2dc3a52403f8f7d774b10174e7f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5694914-acf2-4f83-930e-eee979979bd9/66594955828.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_off0000ebe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE0 5672 bytes
SHA-256: afcd7de19fc2ad84f1bec089cb87585865512ade854b836d5a5cf51168d38dc8
font_01_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 10436 bytes
SHA-256: 493729fd14b0ee6a0f193309524061030c11d25ccc588304ca4354432d9a7b89

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