Malicious PDF — malware analysis report

Static analysis result for SHA-256 4678b00bcecf1627…

MALICIOUS

PDF

111.2 KB Created: 2021-03-21 06:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5935ae009c82498c7cbda643b672808f SHA-1: d8265866d9d75137e42d6749b602f9e8f11fcae4 SHA-256: 4678b00bcecf1627366bd4b80789fba9885860bc3ee247066b82cf31ee17166e
96 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 an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/wix?keyword=prisoners+of+geography+pdf
    • http://kixalilabuzawov.medianewsonline.com/581188622.pdf
    • http://sepozimog.scienceontheweb.net/sepatipasotalovozokozujit.pdf
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5ffcdca0d7703.pdf
    • http://zanodopowe.sportsontheweb.net/manajemen_sumber_daya_manusia_perusahaan.pdf
    • https://static.s123-cdn-static.com/uploads/4414494/normal_5ffc2e364414a.pdf
    • https://cdn-cms.f-static.net/uploads/4367625/normal_600f54c27ed3d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xewamejixolefaj/jiwuludabuforavamixevifo.pdf
    • http://sajatuvireguta.atwebpages.com/64982795118.pdf
    • https://s3.amazonaws.com/lorerexeg/watch_danielle_steel_jewels_movie_online_free.pdf
    • http://devepovamijube.epizy.com/handwriting_sentences_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/a2749e59-e43e-472c-ba9e-1b8ee4a0f83d/financing_balance_sheet_meaning.pdf
    • https://s3.amazonaws.com/viromibukoleliw/98024426825.pdf
    • https://s3.amazonaws.com/suximawo/99164790605.pdf
    • http://zaxuzut.atwebpages.com/apache_hive_book.pdf
    • https://uploads.strikinglycdn.com/files/aa3a1efd-6e78-4d44-aecc-1c0b0301e6f2/56479843774.pdf
    • http://fabedidatifi.onlinewebshop.net/most_energy_efficient_electric_fireplace_insert.pdf
    • http://xitagewiz.epizy.com/avocado_salad_recipes.pdf
    • https://s3.amazonaws.com/mukut/84338359102.pdf
    • http://wegamaluperetuj.atwebpages.com/36430426787.pdf
    • https://uploads.strikinglycdn.com/files/40db85fb-ddf3-48c9-ba80-3b4a3aa8c421/50351287440.pdf
    • http://tekunobujolid.epizy.com/60082802575.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000177f2.bin
23c34f20791affcda56c309736d54a698e53fe9504f359d166869c1633cbcd1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x177F2 5372 bytes
font_01_sfnt_off00018a3e.bin
a640d58b264b24df33cda4d7d7d58d89a80192d8047b0db4f905441fc58f71e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x18A3E 10892 bytes